Check out the IMAC Website:

http://www.mini-iac.com

Download the following items:

Aresti Made Simple
Aresti Dictionary
Judging Summary Card

These will help a lot. Also take a look at the walkthroughs for the sequences and so on.

I also STRONGLY recommend the last 2 articles in Model Aviation where Peter Goldsmith (Head of Team JR, TOC competitor and Master’s pilot) sets out his trimming routine. It is in the Scale Aerobatics column by Mike Hurley.