Does anyone know any good AI tutorials?

I’m looking for a turret based AI tutorial

AI can cover an extremely wide range of things. Please be more specific.

like a AI turret. Like how you would see in an RTS like WarCraft 3. Or in a tower defense game where turrets would attack on enemy’s when they get close enough

I recommend looking into RainAI{Indie} for doing AI. Its’ free and has a full documentation with tutorials.

http://rivaltheory.com/rainindie/
http://support.rivaltheory.com/documentation
http://support.rivaltheory.com/rainindie/wiki/doku.php
http://support.rivaltheory.com/rainindie/api/namespaces.html

There is a turret in Dogzar’s Animated Soldier(link) in the store. It’s pretty well done, though it’s not a tuorial.