Jet, I doubt you're going to learn much in most of the H2H arenas. Most of them have skewed ammo load-outs, or are set for quick free-for-all skirmishes.
Best bet is to arrange some time with a trainer in the Training Arena. Look back at previous posts in the Help & Training section of the AH forum...you'll find a number of trainers who've posted e-mail addresses...among them are Ghosth, Tequila Chaser, Ren, Soda, Nomak and more. If you can't find any of them, post a note to Help & Training and someone will respond back to you. Let me know if you have problems finding a trainer...I'll hook you up with someone.
DmdMax