Hi Addy,
I'm glad the website helped. As to back handsprings, those are a fairly advanced technique, probably best learned under an instructor. You would at least want someone to aid or spot you initially to avoid injury. Nevertheless, here is a pretty good link explaining back handsprings:
http://cheerleading.about.com/od/gym...ackhandspr.htm
I'm sorry I can't be of too much more help. My relatively limited experience with tumbling is through martial arts, and suffice to say, I was never guite great at most such techniques.
I hope you are able to join a gymnastics class soon in order to further pursue your interest. Take care.
