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
“Install a wallet” is too wide. Here is a map so you do not install five “just in case” and keep everything in one Chrome extension.
Hot
Keys on a device that goes online.
- Browser extension — MetaMask, Rabby. Convenient for Uniswap. Risk: a phishing site and a malicious extension.
- Mobile app — Phantom, Tonkeeper, Trust Wallet. Convenient for everyday transfers. Risk: a fake app store listing and screenshots of the seed in the cloud.
- Desktop — rarer, same idea: hot while the computer is online.
Cold
Keys live on hardware or paper and do not sit on the network.
- Hardware — Ledger, Trezor. The signature happens on the device; the phone or PC only shows the request. For amounts you would miss.
- Paper / stamped — the seed on paper in a safe. Not for daily swaps. One fire, or one photo in WhatsApp, and the model is broken.
Custodial
An exchange account. Separate piece: an exchange wallet. That is not “a kind of MetaMask”. It is a different legal and technical animal.
Smart accounts and multisig
The account is a contract: limits, co-signers, social recovery. Useful for teams and people who hate a single slip of paper. More complex. Usually too early for a first wallet.
Where to get each app without downloading a fake: where to download a wallet.