Help With an E2 Helicopter

I’m only new to using Expression 2, but I have big ambitions. When I realized that you could make working helicopters with E2, I looked up tutorials, but was disappointed that I could not find any on making Planes or helicopters. I know how to make a basic mouse-aimed turret, but I need to know more. For example, what would the line be for making the aircraft go upwards, or to hover in the air, or to move forwards. I’m not asking for full codes, I just need a little help.