Do not use Coinbase! They have extremely poor service and will not support you if you ever encounter issues logging in. Instead, they will write a generic response to your ticket and immediately close it. If any major bank tried to pull this they would get buried in lawsuits.
Again, avoid this service at all costs. Forget their greedy 5% fees on deposits/withdrawals - it doesn't even matter if you can't get your BTC or USD back period. That's a 100% fee.
Coinbase is like the only exchange in america and they know that people will always use them no matter what because they don't really have a choice, I personally don't like coinbase and I am so happy that am not a citizen of the united states, so I make use of any trading platform I want to, I used coinbase at first for a while, but I have to change to when I saw how poor their service was, now I make use of binance and I can say they are the best.