SimHQ has tons of articles on air combat basics.
Rolling scissors:
http://www.simhq.com/_air/air_054a.html
There are more but that's a good article. Remember that basic air combat maneuvering (ACM) applies to everything from the earliest biplanes to the absolute latest jet fighters. New technologies and performance alter the techniques somewhat but the basics are always the same. So learning the FW190 is a great way to really get a grip on the techniques as it's a bit of a tougher plane to get started with but once you learn it... you can easily apply the technique to other aircraft.