Coinbase is very good and easy to use exchange.Beginners immediately buy coins at this company because of its reputation and popularity. This exchange gives away bitcoins easily that is why it is user-friendly to first timers. You can now buy bitcoins using your PayPal and other major credit cards.It offers benefits and services such as purchase up to $1,000 worth of BTC per week, instant transfers among users, insured deposits, debit cards, well-documented API, and wallet services.But i prefer OpenLedger Dex and bitshares decentralize exchanges for trading.