There are a number of trainers out there for electrics and you will receive a lot of advice on which plane to get.

My observations for electric trainers indicate the two most often suggested ones are:

1. Slow Stick http://www2.towerhobbies.com/cgi-bin...&I=LXHCJ2&P=ML

2. Easy Star http://www2.towerhobbies.com/cgi-bin...&I=LXFRU7&P=ML OR
http://www2.towerhobbies.com/cgi-bin...&I=LXFXV0&P=ML

Hope this helps.