There are a few point of knowledge that will translate over from flying in the cockpit to flying RC, but the general skillset is pretty different. It takes some time to get orientation right as the vehicle turns but you don't. The good news is that the path of learning is very well worn, with fixed wing trainers remaining virtually unchanged since the '70's and the process of learning collective pitch helicopters being fairly stable since the '90's. A human instructor is the most valuable tool you can have. So first decide what kind of aircraft you really want to fly, then get with an instructor to show you the basics. If it's helicopters, the 500 size is a good sweet spot between cost and flight performance. Smaller helis are much more twitchy and get tossed around by the wind a lot more. For planes, the Eflite Apprentice is a great choice if you want to stick with small electrics, but if you are planning to join a club in order to fly bigger models pick any company's .40 or .60 size trainer and get the field equipment to go with it.