Paypal is good to start with. Though they have increased the types of account they are offering which could be counfusing to the new user. However, if you doing serious business then you should consider going for their "Business account" which is free. But keep in mind that you must have a bank account in your business name, because they will only send payments to that account. Signing up is free and takes just a couple of minutes. However, do remember that if you fail to become verified within a couple of months time, your account can be freezed at any time without warning.