Well, you will see a lot of fighting done with no regard for altitude or energy, and many don't use any combat manoeuvre more advanced than a banking turn with the throttle pulled back. You might as well be dueling with MG equipped motorbikes on a field if you don't use the vertical dimension.

Haha, now that I'd like to see! Hmmm I seem to be guilty.. Any tips or vids?

Start with the term boom and zoom in a google search and go from there. ;) Next check out what a rolling scissors is. Then probably then look at hi and lo yo yo's. Once you've learnt about those and given them some practice you'll be picking off all the n00bs going round in circles cutting the grass. :)

Sir yes sir! Ill start right away sir.

lol
here is a good 1. If u supprise (i aint spelt that right have i) a more agile enemy and ur on their 6 and they pull up to loop DONT FOLOW THEM! instead bank left or right and swing round if the enemy aint seen u do this u got a kill comming ur way

While digging around for some info, I found this:
http://web.comhem.se/~u85627360/(There is a link to download the .pdf.)

Being the flight sim noob that I am, I found it to be pretty helpful. It is a hefty amount of reading though.