I highly suggest not to use Coinbase. I had a bad experience with that made me regret doing transactions with them.
I wanted to invest in trading, so I transferred a small amount to Coinbase and followed their instructions on how to start. Now that it has been okay for me after 3 months of trading, I wanted to withdraw my money.
It has been a struggle for me to withdraw and it has been weeks now that I am trying to withdraw. Their online customer service never responds with help. They only repeat whatever is written on their site. Good thing it was only a small amount.