Pretty much you want to get Coinbase because it's easy to register, get verified & link your bank account to it. The interface might be tricky @ first but it's simple after you get used to it. And for new user(s), when you buy Bitcoin on Coinbase, it takes like 12 days for you to be able to actually use it to send to another wallet & such. Also, Coinbase has partnered exclusively w/ PayPal so you can sell your Bitcoin for cash & get it to your PayPal instantly. But if you withdrawal to your bank account, it takes 1 business day.
To get Bitcoin withdrawals from Dimes, you have to deposit Bitcoin first. And if you deposit using Bitcoin, Dimes gives you first priority in cashing out & it's fast when they call to confirm your info.
Respectfully, register to get Coinbase because it's the best option - easy to register & get verified. The only issue is you have to wait 12 days to actually use the Bitcoin you bought. So take the necessary action because this is your money that you want when you win.
