http://www.gamasutra.com/features/20010629/geczy_01.htm
and
http://www.gamedev.net/reference/art...rticle1434.asp

These are guides I am going to start with for writing this. I decided on DirectX because I already have 2 books one on DirectX (Tricks of the 3D Programming Gurus and Programming Role Playing Games With DirectX) Tricks deals with DirectX 9, RPG deals with DirectX 8... but from what I understand that shouldn't be a problem since there wasn't too much changed between the 2 that the guides for 8 will work for 9 with a little work on updating the code.

One of my main questions is from you DirectX gurus, do these guides look sound? I know there are a number of guides out there that teach bad programming practices.

I have also read

http://www.gamedev.net/reference/art...article744.asp

to get an understanding of the physics behind a isometric tile engine.

Are there some other guides I should look at, I plan on cruising through gamasutra and gamedev some more to try and find more guides on this topic.