3 or 4 channel for a beginner?
Champ RTF (3 channel) with 2.4 GHz transmitter ...$89
Trojan T-28 Ultra Micro UM (4 channel), BNF ...costs you another $99 (use the same radio)
You will find many folks here on RCGroups recommending the Champ as a beginner's plane (it is how I learned) and also many recommending the UM T-28 as an easy, entertaining and fun way to learn ailerons with 4 channels.
I explain more in this post: