Once you have tried and tested your favorite site, then the process becomes more straightforward. Is it risky giving up my ID in order to buy? Updated: Try buying bitcoins with cash instead. Such an unrivaled dominance has cemented its reputation as the reference currency for the crypto economy. Vice-versa, most Bitcoin brokers also let you specify the amount of bitcoin you want and will charge you the equivalent in fiat. If you want to learn the best way to buy bitcoins, keep reading!