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
DeFi (decentralized finance) is swapping, lending and liquidity that run as programs on a network. There is no office to visit with a passport. There is a contract address and your signature.
Uniswap, Jupiter, STON.fi, Aave, Meteora — different flavours of one idea: the rules sit in code, not in a manager's policy.
How this is not an exchange
On a CEX the order lives on a server. On a DEX the swap goes from your wallet into a pool. The keys stay yours if the wallet is non-custodial. Liquidity can be worse. A scam token with the same ticker is normal.
Where the risk comes from
- A contract with a hole or an admin back door.
- A pool with no liquidity: a price on screen, nothing you can sell into.
- You signed an approve for the whole balance — the site drains it later.
- Counting the position and the wallet receipt twice. How not to inflate the total: DeFi without double-counting.
You do not have to use DeFi. If you do, look at the position, not only the token in the wallet. Crypto360 tries not to add the same dollars twice.