Air Commander. If you are completely new and your question sounds like you are these suggestions might help. Before you buy anything at all go to your local hobby shop and ask the owner where the local clubs fly. Then go to the field and look around. Take note of what type of equipment and airplanes other learners are flying. Most fields have instructors , ask anyone there who the instructor is and introduce yourself. BTW instruction is free so don,t worry about it. You will find that most guys flying are only too happy to talk about airplanes and radios and you will learn a lot. After an hour at the field you should have a good idea of what kind of airplane and radio to buy. Try to buy a radio that is suitable for the job. You said you only want a 4 channel radio and you can probably get by with one but a bare bones 4 channel is really not much good with todays airplanes. You need something that has provision for "programming". If you are of average intelligence you will learn to fly and outgrow your simple radio in a few weeks. I would advise you NOT to try to learn on your own you will almost certainly crash in the first few moments then you are stuck with a bag of balsa sticks and maybe a damaged motor plus a radio that you can't sell. Believe me there is only one way to learn to fly and that is with a capable instructor. Also make sure your radio has privision for what we call a buddy cord which allows the instructor to save the plane after you get in trouble. This is only scratching the surface and there are many important things to learn but you don't have to be a rocket scientist to get the hang of it and have fun. You will probably have to join the AMA if you fly at a club field. Hope this helps and good luck.
If you are looking for a club in your area the AMA can help you with this. They are on the net . E them and ask for the address of the nearest club.