First off, to start the CLI, type:
If there's no wallet file in the current directory it will be created for you on startup, otherwise you'll need to choose a wallet name and one will be created for you.
Important: Monero wallets consist of two files, a wallet file and a keys file. For example if your wallet is called
my-wallet, the files will be
my-wallet (wallet data file) and
my-wallet.keys (key file). Both of these files are needed.
Once in the wallet REPL, the following commands are available: