Browse the forums and you will find lots of good info on jumping!
Have you mastered english riding? You should have a pretty good grasp for it before attempting jumping, so I'd reccomend getting lessons with an instructor that also does jumping lessons, so she can help you move that way :)
I just started my jumping lessons about 4 months ago and I love it! It can be overwhelming at first, but it is so rewarding when you nail a jump.
Good luck & have fun!!
Every great dream begins with a dreamer. Always remember, you have within you the strength, the patience, and the passion to reach for the stars to change the world. ~Harriet Tubman