Paste an address. The faucet sends 10 testnet IGN and shows you the transaction hash. Once per address per day, once per connection per day. No account, no sign-in, nothing to install.
Public testnet: not yet open. The faucet is prepared on the devnet and answers "not open yet" until the testnet starts.
Ask for 10 IGN
An Ethereum-style address: 0x and 40 hex characters. The one the miner made for you, or any wallet you have pointed at the Igneum testnet.