If you think about becoming a trader and looking for a good Forex Broker pay attention at those having the lowest or even Zero Spread. Spread is difference between a bid price and an ask price. This difference is a Broker actual commission. If a Broker’s spread is very high you income will be minimal no matter how good you trading strategy is. Some brokers do not offer a fixed spread. The others offer a constant spread for a given pair but usually it is higher than a variable spread. Some Brokers have Zero Spread for some pairs, but  make comission charge for trading those.
Here is the list of Forex Brokers offering Zero Spread Account