Bitcoin & Web3 Basics: The Beginner's Learning Path
Nine articles, one learning path: how wallets come to exist, how transactions actually work, and what matters for your own security — three modules, ~28 minutes, with a progress tracker and the matching tools to try it yourself.
The basics of Bitcoin and Web3 aren't one topic, they're a dozen small ones: seed phrase, nonce, UTXO, checksum, gas — each term understandable on its own, but without an order it reads like disconnected vocabulary. This page is a learning path through the nine fundamentals articles on this site, sorted into three questions that build on each other: how does a wallet come to exist? How does a transaction actually work? And what matters for addresses in practice? About 28 minutes total — your progress is remembered locally in your browser, nowhere else.
Modules 1–3: How a wallet comes to exist — and how to protect it
A wallet isn't an account at a company, it's pure math: 256 bits of randomness become a seed phrase, the seed phrase produces keys, the keys produce addresses. Once real amounts are involved, a browser tool isn't enough anymore — then the hardware-wallet setup ritual matters, and word count directly determines seed phrase security.
To follow along: Wallet Generator (create offline), Seed Phrase Validator (check a checksum), Seed Security calculator (do the math).
Modules 4–6: How a transaction actually works
Once a wallet exists, the next question is: what happens when money leaves the address? Ethereum counts every address separately, prices every transaction in five different units of the same currency — and Bitcoin does the bookkeeping completely differently from Ethereum and Solana.
To do the math: ETH Unit Converter, to read it directly: Transaction Decoder — pulls nonce, gas, and recipient straight out of raw hex.
Modules 7–9: Addresses — checksums, QR codes, vanity
The address is the interface where most mistakes happen — and where the cleverest safeguards are built in. Checksums catch swapped characters, QR codes replace error-prone typing, and some addresses even have a readable, deliberately computed prefix.
Try it yourself: Address Validator, QR Code Generator, Vanity Generator.
Where to go from here
Every term from this page, condensed for quick lookup: the Web3 Glossary with 32 entries and search. For the worst case — backup, inheritance, compromise — the Self-Custody Checklist with 15 items you can check off. And to test your own knowledge without reading an article: the Self-Custody Quiz, six questions in three minutes.
For Web3 projects with real funds or your own infrastructure — custody design, multisig, integration — the same rule applies as everywhere on this site: understand first, then test, and at scale start a conversation.
