Mathematics

 Beautifully presented tutorial on Calculus I,II and III.

A great resource to get you up to scratch with the required mathematics for general game development such as transformations, collisions, physics and rendering.

Another really good game mathematics resource, but this one comes with a lot of great source code such as a full on maths library.

Similar to the above but a more advanced treatment.

This is a fantastic book that will serve extremely well as your reference for all things Collision Detection related. It also comes with some other interesting chapters dealing with floating point robustness, low level optimization and Collision Detection techniques on the GPU.

The online resource for all things Calculus and Algebra.