Help 
What trick do you need help on?
We need more info!
I think he is looking to start off and if so look into banana turnover, followed up by red halo both great great tutorial are by kyle vegh from rethinkyoyo.com
http://www.rethinkyoyo.com/2/post/2011/06/banana-turnover.html banana turnover
http://www.rethinkyoyo.com/2/post/2011/07/red-halo.html red halo