OpenGL ES learning curve kills

If you stare long enough at OpenGL ES on iOS you will find that it stares back into you and it will tell you that:

1. Your C and C++ is hell of rusty.
2. You should have paid more attention in calculus 3 and linear algebra.
3. This is going to take a while.

Here’s my current arsenal of resources that I’m slowly leafing through to make sense of the madness:

• iPhone 3D Programming, O’Reilly
• Beginning iPhone Games Development, Apress
• OpenGL ES from the Ground Up, some blog
• OpenGL ES Programming Guide for iOS, Apple

Anyone have a good strategy for picking up OpenGL on the quick?