Before I was married, I spent every spare moment either building RC planes or at the field flying. At one time I had 8 airplanes and 4 helicopters.
I was hooked on 1/3 scale planes and .60 size choppers. Something about a twin cylinder engine swinging a 28" prop pulling a 25+ lb airplane vertical while torque rolling that turned me on. That and hovering 3" off the pavement inverted with the heli....
It was fun while it lasted but that hobby can cost as much or more than real airplanes if you keep building, flying, crashing, building, flying, crashing and don't forget the new stuff you must by every year because some company came out with that gotta have it item that obsoleted your "old" stuff.
After all, we can't be satisfied with the small, cheap, foam, low and slow stuff can we?
But really, some of that small foam stuff is very very difficult to fly! Even experienced pro's can have problems flying some of that stuff. Some of it is so poorly designed that it will hardly fly! Just because it is advertised as a "TRAINER", don't believe the hype. If it does not look like a good aerodynamic design, it most likely is not. Some of that stuff has a high wing loading and or it is so light that a 5mph breeze will trash it.
I recommend at least a .40 size high wing trainer for beginners. They are not pretty, but they will fly and do a good job. The ARF's these days are amazing for the price, I would not build one for what you can get an ARF for these days. The foam stuff is garbage if you tumble it on takeoff or landing, at least with a built up ARF, you have a chance of repairing minor damage.
Good luck!