The above suggestions for a glow powered trainer are excellent.

If you want to go electric I suggest the EasyStar or the SlowStick.

The Easy star requires a larger area to fly in (minimum is football size field), however it will handle wind up to 10 mph with minimal problems.

The Slow Stick you can fly in a baseball field size area, however, it doesn't like any wind above 3 - 4 mph.

The SlowStick is less expensive than the EasyStar - EasyStar RTF is about $180.