Course outline
- 1What a crypto wallet is, and where the coins actually live
- 2Custodial vs non-custodial wallets: whose keys are they
- 3Types of crypto wallet: hot, cold, extensions and hardware
- 4The seed phrase: what it is and why you tell it to nobody
- 5Address, private key and password: how they differ
- 6Where to download a wallet without installing a fake
- 7How to install MetaMask and create a wallet
- 8How to install Rabby: a wallet for many EVM chains
- 9Phantom: a Solana wallet and how to download it
- 10Tonkeeper: how to get a wallet on TON
- 11Hardware wallets: why Ledger and Trezor, and where to buy them
- 12An exchange wallet: convenient, but the keys are not yours
- 13What DeFi is, in plain language
- 14CEX and DEX: where to swap, and what that implies
- 15Gas: why a swap will not send without ETH, SOL or TON
- 16How to buy crypto: fiat, exchange, network, DEX
- 17How to swap tokens on Uniswap (EVM)
- 18How to buy a token on Jupiter (Solana)
- 19How to swap a jetton on STON.fi (TON)
- 20Phishing: where you never type a seed phrase
- 21Why a tracker asks for an address, not a seed phrase
- 22How to check the purchase arrived: network, address, tracker
- 23Wallet security: short rules that actually work
- 24Twitter / X: how to find a project's real account and skip the clone
- 25DefiLlama: where to find a project's real site and Twitter
Most losses are not “Ethereum got hacked”. Someone opened the wrong site, pasted a seed or signed an approve for the whole balance. The network honestly executed the signature.

Checklist before any signature
- The address bar matches the one you saved yourself. Not from an ad, not from Telegram, not from a reply on X.
- The wallet is not asking for a seed. If it is, that is not a wallet, it is a form for a thief. See phishing.
- In the preview: network, amount, contract. An opaque
setApprovalForAll/ unlimited approve to an unknown address — reject. - There is native gas, and the chain is the one you withdrew the stable to. See gas.
Where to get the link if not from search
Search and ads sell the top slot to fakes. The sane path:
- the protocol page on DefiLlama → Website and Twitter;
- the pin and the site in the header of the official X account;
- a bookmark you made on a quiet day.
Hardware and pocket change
A hot wallet for penny swaps. An amount you would hate to donate — hardware. That seed is not photographed either.
Crypto360 does not need a seed to show a balance: an address is enough.