What Web3 actually is
Start from the ledger: what a blockchain records, who keeps it, and why that changes who owns your account.
- 01 A ledger, not a company A blockchain is a shared record of who owns what. Anyone can read it, entries can only b…
- 02 Who keeps the record Thousands of independent machines (nodes) keep a full copy and follow the same rules to …
- 03 Where Web2 ends and Web3 begins On a Web2 platform your account lives in someone's database and can be frozen or deleted…
02Wallets and keys
What a wallet really holds, why the seed phrase is the account itself, and how to pick between hot and hardware.
- 01 A keyring, not a safe Your coins never sit "inside" the wallet app. They are entries on the chain, and the wal…
- 02 The seed phrase is the account When you create a wallet it shows 12 or 24 words once. Those words regenerate the key on…
- 03 Hot wallet or hardware A browser or phone wallet is convenient because the key sits on a connected device — whi…
03Coins, tokens, stablecoins
Sort the asset zoo: what a chain issues itself, what anyone can issue on top, and what keeps a dollar peg.
- 01 Native coins vs tokens Every chain has one native coin used to pay fees — BTC on Bitcoin, ETH on Ethereum. Toke…
- 02 Stablecoins: the cash leg Stablecoins such as USDT and USDC aim to hold one dollar each, backed by reserves the is…
- 03 NFTs and real-world assets An NFT is simply a token where each unit is distinct, which makes it useful as a certifi…
04Your first on-chain moves
What gas pays for, what happens between signing and confirmation, and the approval step most people skip past.
- 01 What gas actually pays for Every transaction consumes computation and storage that the whole network must replay, s…
- 02 The life of a transaction You sign locally, the transaction goes to a public waiting room (the mempool), a validat…
- 03 Approvals: the step to read twice Before a protocol can move your tokens you grant it an allowance, and many apps request …
05Staying safe
Most losses are social, not technical. The shapes scams take, the checks that stop them, and what to do in the first hour.
- 01 Three shapes almost every scam takes One: a fake site or wallet pop-up that asks for the seed phrase — no legitimate service …
- 02 Four checks before you connect Reach the site from a bookmark rather than a search ad or a DM link. Compare the domain …
- 03 If it already happened Move whatever is left to a fresh wallet created on a clean device — revoking approvals i…
06Reading the market
Price is the output. Learn to look at supply, positioning and sentiment — and where the numbers actually come from.
- 01 Market cap, float and FDV Market cap is price times circulating supply; FDV uses total supply instead. When only a…
- 02 Sentiment and positioning The Fear & Greed Index compresses volatility, volume and social data into one 0–100 numb…
- 03 Unlocks and where to look things up Team and investor allocations unlock on a published schedule, and a large cliff can add …