Hello guys! which site is the best for using bitcoin.

But i have account in two sites. But i don't know which site is the best. which site you like most. But most time i think Coinbase is the best. Because it has three coins of addresses. Such as Bitcoin, Ethereum and litecoin.

Yes! That makes sense, even they offer Coinbase user to user completely free transaction. But the coinbase is completely third party wallet, they always high risk involved, but other case blockchain like more secure than Coinbase. Moreover, Both are online wallet, that don't good further uses.