I have my PPL now and Flightsim is what got me all started for my love of flying. The cheapest ones on the market Flightsim and X-Plane. I've never played x-plane so I can't tell you a whole lot except that it has more refined, accurate aerodynamics supposively than FS but lacks in the eyecandy that FS has to make your flying world feel more real. They aren't bad for instrument training but they are not very good for your PPL. While they can all simulate manuevers you will have to do for the PPL like stalls,slow flight, turns around a point, short and soft field takeoffs and landings, etc. you can't get a feel for the aircraft and an FS plane handles differently than a real world plane. While it will help outline some of the basics, it can make you develop some really bad habits one for me was not looking out the window enough and not referencing the horizon when I first started and of course I had to develop a feel for the aircraft that FS never taught me. If you want to make FS as real as possible without spending a boatload, then get the yoke or a high quality joystick and rudder pedals and there are plenty of solid payware aircraft addons for planes like the 172, 152, cherokee, etc. planes you might be training in and those give you a pretty accurate portrayal of the cockpit. In terms of price for all this look at around 200 bucks for all the hardware and software. Once again though the only way you'll become a good pilot is to develop a feel for the aircraft and that only comes through real world flying experience.