Back to Blog 

ZealynxWeb3 SecurityTutorial
Introducing Your First 90 Days in Web3: A Free, Guided Path to Actually Understand the Space
16 min
The rest of Zealynx Academy assumes you already know Solidity. This is the front door for everyone who doesn't yet.
TL;DR
- Your First 90 Days in Web3 is live at academy.zealynx.io/90-days/web3. It is the first course in the new Foundations section of Zealynx Academy.
- The goal is ecosystem literacy. Understand the whole space for real, crypto, DeFi, NFTs, wallets, DAOs, scams, and security, instead of memorizing jargon you cannot connect to anything.
- 24 interactive checkpoints across 4 acts (The Space, The Machinery, The Judgment, Your Place). About 20 minutes each, roughly 13 weeks if you pace it one every few days.
- Interactive, no videos. As you complete checkpoints, a system map fills in, a node network showing how the pieces of Web3 actually connect. Each checkpoint is one verified piece of understanding.
- Taught with a security auditor's lens. Judge things by what they do, not what they say. And the thread that runs through the whole course: in Web3, some mistakes cannot be undone.
- Free. The first 3 checkpoints need no account. The whole course is free.
- You earn Lynx (the Academy's points) and climb a new 90 Days leaderboard tab.
- An audio companion podcast is coming soon.
- First in a series. A "Your First 90 Days in Solidity" course is next.
Why This Course Exists
Zealynx Academy has always had a problem it never said out loud. Everything in it, the protocol rebuilds, the Shadow Arena, the AI auditor guide, the eMBA, assumes you already show up knowing basic Solidity and basic Web3. It starts where most people are trying to arrive.
That is a deliberate choice, and I stand by it. But it left a gap. Two kinds of people kept hitting a wall.
The first is the true beginner. Someone who read a headline about a hack, or a friend who made money on a token, or a job posting that mentioned "on-chain experience," and decided they wanted in. They open a tutorial, and inside five minutes they are typing commands they do not understand, deploying something they cannot explain, and quietly wondering if everyone else already knew this. They can operate a few tools by the end. They still cannot tell you what any of it means.
The second is more common than you would think. People who have been around Web3 for a year or two. They own tokens. They have used a DEX. They have a wallet. But if you ask them what a validator actually does, or why a bridge is the single most dangerous thing they interact with, or why "not your keys, not your coins" is a mathematical fact and not a slogan, they go quiet. They learned the surface and skipped the foundation, and the gaps show up at the worst possible moments.
I have spent years auditing smart contracts. The thing that separates people who last in this space from people who get wrecked is not how many commands they memorized. It is whether they understand the machine they are standing on. So we built a course that teaches exactly that, and nothing else.
What "Your First 90 Days in Web3" Actually Is
It is the first course in a new section of Zealynx Academy called Foundations, and it lives at academy.zealynx.io/90-days. The course itself is Your First 90 Days in Web3.
Here is the one-line version of what it does, and it is the framing I care about most:
They teach you to operate Web3. This teaches you to understand it.
There is no shortage of content that shows you which buttons to press. Connect this wallet, sign this transaction, swap this token, ape into this. That content produces people who can follow steps and have no idea what they just agreed to. This course goes the other direction. By the end, you will not necessarily be faster at using any single app. You will understand what is happening underneath every app, which is the thing that actually keeps you safe and makes you employable.
It is not a glossary you memorize. It is a map you build.
How It Is Structured: 24 Checkpoints, 4 Acts
The course is 24 interactive checkpoints, grouped into four acts. Each checkpoint takes about 20 minutes. If you do one every few days, the whole thing runs about 13 weeks, which is where the "90 days" comes from. You can go faster. Most people should not, because the point is understanding, not speed.
Each checkpoint is one verified piece of understanding. Not a video you half-watch while checking your phone. A short, focused, interactive lesson that ends by confirming you actually got it before it lets you move on.
Act 1: The Space
You start with the terrain. What is a blockchain, really, not the marketing version. What problem does it solve that a normal database does not. What is crypto versus DeFi versus NFTs, and why do people constantly confuse them. Where did this whole thing come from, and what were people actually trying to fix. By the end of Act 1 you can look at any Web3 project and place it on the map instead of nodding along.
Act 2: The Machinery
Now you go under the hood. Wallets, and what a private key actually is (spoiler, it is the whole game). Self-custody and why "not your keys, not your coins" is a fact, not a vibe. Transactions, gas, validators, consensus. What a smart contract is and is not. How DeFi actually moves money, and where the risk hides. This is the act that turns "I use Web3" into "I understand Web3."
Act 3: The Judgment
This is the act I am proudest of, because it is where the security auditor's brain gets transplanted into you. You learn to judge things by what they do, not what they say. How scams actually work, not the cartoon version, the real mechanics that fool smart people every day. Why some mistakes in Web3 cannot be undone, and how that one fact should change every decision you make. How to read a project with suspicion in the right places and confidence in the others. This is the difference between a tourist and someone who belongs here.
Act 4: Your Place
The final act is about you. Where do you fit. Developer, auditor, founder, DAO contributor, investor, something that does not have a name yet. What the next 90 days look like after this course. How to keep learning without drowning. And, honestly, which path the rest of Zealynx Academy is built to take you down next.
The System Map: You Build It as You Go
Most courses give you a table of contents. This one gives you a map.
As you complete each checkpoint, a node lights up on a system map, a network diagram of how the pieces of Web3 connect to each other. Wallets connect to keys connect to transactions connect to contracts connect to DeFi connect to risk. At the start it is nearly empty. By the end it is a full, connected picture of the ecosystem that you assembled yourself, one verified checkpoint at a time.
This is not decoration. It is the pedagogy. Web3 is not a list of terms, it is a system where everything touches everything else. A bridge exploit and a wallet drain and a governance attack are not separate topics, they are the same machine seen from different angles. The map makes that visible in a way a linear syllabus never can. You do not just learn the parts. You see the shape.
And it is consistent with how the entire Academy works. We do not use videos. You learn by doing, by deciding, by getting things right and wrong and finding out immediately. The system map is that philosophy applied to absolute beginners.
Taught Like a Security Auditor Would Teach It
I could have made this a friendly, neutral "intro to crypto" course. There are hundreds of those. I did not, because I do not think that is what beginners actually need.
What they need is the mindset that keeps auditors alive: judge things by what they do, not what they say. A protocol's marketing says it is decentralized. The code says three wallets control everything. A project says your funds are safe. The contract says an admin can drain them tomorrow. The entire skill of security is learning to ignore the story and read the mechanism. I decided a beginner should start building that reflex on day one, not five years in.
And there is one thread that runs through every act, quiet but constant: in Web3, some mistakes cannot be undone. Send to the wrong address, it is gone. Sign the wrong transaction, it is gone. Lose your key, it is gone. There is no support line, no chargeback, no undo. Once you truly internalize that, you slow down in exactly the right places, and that single shift prevents more losses than any list of tips ever could.
That is why a security firm is the right place for a beginner course to come from. We are not trying to get you excited enough to buy something. We are trying to get you competent enough to not get hurt.
Start understanding the space
Your First 90 Days in Web3 is free and open now.
The first three checkpoints need no account, so you can start understanding wallets, keys, and how Web3 actually moves money before you commit to anything. When you sign in, you start earning Lynx, filling in your system map, and climbing the 90 Days leaderboard. This is the front door to the whole Academy, built for people arriving for the first time.
Free, and Free for a Reason
The first 3 checkpoints require no account at all. You can start reading, deciding, and building your map before you sign in for anything. The whole course is free.
I want to be clear about why. Ecosystem literacy is a public good. The single biggest reason people lose money in Web3, and the single biggest reason the space has a bad reputation, is that people are handed powerful, irreversible tools before anyone taught them what the tools do. A free foundations course is the most direct thing a security firm can do about that. If more people understood keys, scams, and irreversibility before their first transaction, a large fraction of the damage in this space would simply not happen.
You earn Lynx, the Academy's points, as you complete checkpoints, and there is a new 90 Days tab on the leaderboard so you can see your progress against everyone else starting the same journey. It is the same reputation system that runs across the whole Academy, now reaching all the way down to your very first checkpoint.
Zealynx Security Brief
Monthly vulnerability spotlights, exploit breakdowns, and security insights. Join security-conscious devs.
No spam. Unsubscribe anytime.
An audio companion podcast is coming soon, so you will be able to reinforce the concepts on a walk or a commute. But the podcast is a companion. The understanding is built in the interactive checkpoints, because that is where you have to actually think.
Where This Sits in Zealynx Academy
Foundations is the front door. Everything else in the Academy is the house behind it.
The Build pillar has you rebuild real protocols like Uniswap V2 from scratch. The Shadow Arena has you hunt real bugs in real forks. The AI Auditor guide has you build your own auditing agent. The eMBA for Web3 Founders teaches the business side of launching a protocol, including tokenomics and governance. All of it is powerful, and all of it assumes you already speak the language.
Your First 90 Days in Web3 is what comes before all of that. It is for the true beginner who does not yet know what a smart contract is. And it is for the person who has been around a while, owns tokens, uses apps, and quietly never built the foundation underneath. Both walk out the same door: understanding the space well enough to choose where they go next, instead of guessing.
It is also the first course in a format. "Your First 90 Days in Solidity" is next, taking the same 90-day, checkpoint-driven, security-minded approach and pointing it at writing code. The idea is simple: a clear, honest first 90 days for each major path into Web3, all free, all built the way we wish someone had built them for us.
Conclusion
I keep coming back to the same sentence, because it is the whole reason this course exists. They teach you to operate Web3. This teaches you to understand it.
For years, the entry point to this space has been a tutorial that hands you the controls and hopes you figure out the rest. That produces people who can click and cannot judge, and in a space where some mistakes cannot be undone, that is dangerous. So we built the course we wish had existed: 24 checkpoints, a map you assemble yourself, a security auditor's instinct to judge by mechanism instead of marketing, and no cost to start.
If you are new, this is your beginning. If you have been here a while but always felt like you skipped a chapter, this is that chapter. Either way, the first three checkpoints are open right now, no account needed.
Start here: academy.zealynx.io/90-days/web3/welcome-to-web3
See the whole map: academy.zealynx.io/90-days/web3
Explore the rest of the Academy: Zealynx Academy Is Public
FAQ
1. What is Your First 90 Days in Web3?
It is a free, interactive course that is the first offering in the new Foundations section of Zealynx Academy. Its goal is ecosystem literacy: teaching you to understand the whole space for real, crypto, DeFi, NFTs, wallets, DAOs, scams, and security, rather than memorizing jargon. It is built as 24 interactive checkpoints across 4 acts, taught with a security auditor's lens. You can start it at academy.zealynx.io/90-days/web3.
2. Is it really free?
Yes. The entire course is free. The first 3 checkpoints require no account at all, so you can start immediately. When you sign in, you begin earning Lynx and climbing the new 90 Days leaderboard tab. There is no paywall and no credit card. An audio companion podcast is coming soon, also free.
3. Who is this course for?
Two groups. First, true beginners who do not yet know what a smart contract or a wallet actually is and want a structured, honest starting point. Second, people who have been around Web3 for a while, who own tokens and use apps, but never built the foundation underneath and feel the gaps at the worst moments. If you want to understand the space instead of just operating it, this is for you.
4. Do I need to know how to code, or already own crypto, to start?
No to both. This is an ecosystem-literacy course, not a coding course, so there is no Solidity or programming required. You also do not need to own any crypto or make any transactions to complete it. The course teaches you to understand wallets, keys, DeFi, scams, and security conceptually and safely, before you ever put real money at risk. The coding path comes later, in the upcoming "Your First 90 Days in Solidity" course.
5. How long does it take?
There are 24 checkpoints, each about 20 minutes. If you pace yourself with one every few days, the full course runs about 13 weeks, which is where the "90 days" name comes from. You can move faster, but the design intentionally favors understanding over speed. Each checkpoint is one verified piece of understanding, and as you complete them a system map of the whole ecosystem fills in.
6. How is this different from the rest of Zealynx Academy, and from Cyfrin or CryptoZombies?
The rest of Zealynx Academy, the protocol rebuilds, Shadow Arena, AI auditor guide, and eMBA, assumes you already know basic Solidity and Web3. Foundations is the front door that comes before all of that. Compared to platforms like Cyfrin Updraft or CryptoZombies, which teach Solidity syntax and coding through tutorials, this course teaches ecosystem understanding and judgment: what everything is, how it connects, and how to read it like a security auditor. It complements coding platforms rather than competing with them, and it prepares you to actually get value out of them.
7. Why is a security firm making a beginner course?
Because most losses in Web3 come from people using powerful, irreversible tools they were never taught to understand. A security firm is the right place to fix that. The whole course is taught with the auditor's core instinct, judge things by what they do, not what they say, and the constant reminder that in Web3 some mistakes cannot be undone. That mindset prevents more damage for a beginner than any list of tips.
Glossary
| Term | Definition |
|---|---|
| Self-Custody | Holding your own crypto directly through your own wallet and private key, with no bank or exchange in control. The core of "not your keys, not your coins." |
| Private Key | The secret cryptographic value that controls a wallet. Whoever holds it controls the funds. Losing it or leaking it is irreversible, which is why it is the whole game. |
| DAO | A Decentralized Autonomous Organization, a group coordinated by on-chain rules and voting rather than a traditional company structure. One of the paths you can take in Web3. |
| Tokenomics | The economic design of a token, its supply, emissions, and incentives. Covered in depth later in the Academy's eMBA track. |
| AI Auditor | An AI system designed to detect smart contract vulnerabilities, from simple prompts to full agentic pipelines. You can learn to build one in a later Academy pillar. |
| eMBA for Web3 Founders | Zealynx Academy's business-focused track covering tokenomics, fundraising, governance, treasury, regulatory, and launch operations for technical founders. |
Get funded for your audit
Core grants cover up to $32k. Growth and Builder tiers available. Rolling applications.
No spam. Unsubscribe anytime.
