Broker

There are plenty of Forex market brokers. Consequently, they need to be supervised, therefore you will need to check whether a particular company is registered in CFTC KNF, FSA, CySEC, SEC, or is a member of NFA.
The information is available on this website:
http://www.nfa.futures.org/basicnet/
Before you choose a broker, check:
-    what platforms he works on
-    what the entrance costs are
-    whether the spread is fixed or variable