RE: Buying
There are a BUNCH of First plane options. Read up and then check in with a club. When you find an instructer it is nice ( AND WISE) to follow his sugestions as he is going to give you his time. He can best teach with gear and a plane he is familiar with. Having said that, I like the Sig LT 40 with an OS 45 for conventional nitro trainer and the Apprentice for an E trainer. The previously mentioned Cub is a decent first plane as well. Some Cubs come with an assortment of learning assistance gear that are suposed to help keep the plane level.
This kind of gear is OVERWELMINGLY unhelpful. Trainers get beat up so simple and repairable are important factors.
Doing RC as a hobby is GREAT it does take a bit of a time investment at first though.