Markets.com is a forex broker that aims both for the beginning trader as well as the more experienced one. They're a serious broker, regulated by the British FSA, and have excellent customer support (both by phone and chat). In 2010 they acquired the domain name markets.com after first having operated under the name GFC markets.
Markets.com wants to be a one-stop-shop broker and they succeed at this fairly well. Besides currencies, customers can trade a wide variety of commodities such as oil, gold, corn, soja beans etc, as well as stocks and indices. You can of course use your sign-up forex bonus for trading commodities and stocks as well.
Maximum leverage is 200:1. There are other brokers that offer more leverage, but a leverage of 200:1 offers plenty of leverage to do set up quick and dirty trades, if that's your thing. It's also note worthy that Markets.com has a wide variety of deposit and withdraw options, which vary by country, very convenient.
This is definitely a broker you want to try out if you're taking forex trading seriously. Beginners get a host of educational help and a very clear trading platform, experienced traders get a lot of different tools to execute their trades and a very professional customer support.