Join a club and get proper instruction. Your instructor will give you suggestions for a trainer.

You will never go wrong with a Sig LT-40 or a Hangar 9 Alpha 60 or an Alpha 40. Tower Hobbies also has their Trainer 40 Mk II. Hobbico Avistar is another good one. The NexSTAR 40 is award winning, too, but I never felt it flew well nor predictably.

I guess my personal favorite was the Hangar 9 Alpha 60.

Good luck and welcome to the RC hobby.