Like the guys said, find someone to help you.

Your biggest problem here is that on something like the Firebird, the rudder is all you have.

On the glow trainers, you have rudder and ailerons and elevator. When the wing dips, you use ailerons to keep the wings level and do most of your turning. Rudder is used a lot less.

Controling altitude and pitch is also very different, and you'll have to learn the relationships between the elevator and throttle and their effects on altitude and attitude.

Don't feel bad or discouraged. Your experience is actually typical for guys trying to fly glow trainers on their own. They usually don't last long that way.

It might also be worth your while to check out a simulator like the freely downloadable FMS or Real Flight or one of the others.

Oh, and the Extra Easy is one of the best flying trainers out there.