Join a club first.

Then, you will meet your club instructors who might already have some trainers and buddy box set-ups. I'd recommend the newcomer not buy anything until you get the "blessings" of an experienced mentor. Use what they recommend and are comfortable with.

The beginner will likely save plenty of ca$h which could have gone into a nice computer radio or a better-suited airframe.

Most beginners throw money at the hobby (out of their enthusiasm) then find themselves a few months later trying to sell some (or all) of the stuff they just bought so they can fund those things they should have bought in the first place! You'll probably find that someone will be selling a Nextar, Avistar, or similar trainer as they progress. Why spend two or three hundred (or more with field gear, etc.) when you might buy a fella's complete set-up for $150 or less!!!

One more thing to remember...in the beginner forums, you are very likely to get answers from other beginners who try to answer your questions. They are trying to be helpful, but some of the posts I read make me cringe! Instead, try to find "mentors" - either online or at your field - who have been through the "learning phase" and can steer you clear of potentially costly and demoralizing mistakes.

Good luck!