SAFE can be traded at safe.trade. It can be transferred from one SAFE address to another, similar to other cryptocurrencies. You can also receive it as a reward for participating in the voting process (either by running a validator or staking your existing SAFE to someone else’s - this will be explained soon).
Because SafeCoin did not have an IEO, there is no need for KYC (Know Your Customer) and is available to US citizens.