If you can't find any good websites with wingman info, go to your book store and see if they have a copy of Robert Shaw's Fighter Combat: Tactics and Manuevering.
ISBN: 0870210599
It has excellent sections on wing/flight tactics as well as good BFM/ACM sections. If you can find it in your local store, you can just read the sections you want in the store, but I recommend you pick up a copy if you're really interested in learning more about air combat.
[ 01-09-2002: Message edited by: Nifty ]