As someone already said, go to the trainers page at
http://trainers.hitechcreations.com/. Read through the whole thing. Don't try to memorize it all, just read through it and get the parts you need now. In about two weeks, go back and read it all again. Some things will make more sense.
Start with one skill set and work on it until you have a good understanding. Then add something else. For instance, start on basic flight and combat maneuvering. Just stick with flying and furballing for a couple of weeks. Then figure out how to hit something with a bomb. Or play around with a jeep. Or something else. Take it one step at a time, and have fun with it.