I scanned over the replies, did not see this suggestions:
V A T S I M!!!!!!!!!!!!!!
Go get a cheap copy of MS Flight Sim 9, read up at
Welcome to VATSIM - VATSIM - The International Online Flying Network what you need to get online, and go start flying! You don't even need to be flying large airliners in Flight Sim, just take up a 172 in a busy traffic patterns.
Vatsim will help immeasurably, the controller are very professional, and you'll be learning to communicate in a stress-free environment. Vatsim was the single tool that helped me become comfortable on the radio.
Send me a PM if you want and I'll help you get set up.