A forex broker works as an intermediary between you and the interbank system. If you don't know what the interbank is, it's a term that refers to networks of banks that trade with each other.

Typically a forex broker will offer you a price from the banks where they have lines of credit and access to forex liquidity. Many forex brokers use multiple banks for pricing, and they'll offer you the best one available.

Funding and withdrawing money from your account is very important. You should find out what funding methods the broker offers. For example, almost all brokers accept Credit/Debit cards, Bank Wire transfers, Skrill (Moneybookers), and PayPal. It’s recommended that you check what are all the available funding methods and what fees are applied for each method. Also, check out if the broker has any minimum deposit and withdrawal requirements.