I'll second the World Models World Star 40 trainer.

Just a word of warning though. I found building my first ARF a bit of a challenge - harder than I imagined it would be. I think most instructions assume some knowledge, so don't be afraid to ask for help. In fact I would make that the #1 criteria for choosing a place to buy your first plane plane - will these guys help me if i get stuck.

I bought my first plane from a little hobby shop where the staff spent a few hours getting my first plane sorted out - all part of the service.

Good luck

Peter