Just a quick warning. For the last several weekends, my weekend ritual has been to write an installment of the OpenGL ES From the Ground Up tutorials. The sixth installment probably won't be coming out this weekend, however.
I'm backlogged on my current writing project, plus my daughters are in four dance performances this weekend, and I have relatives coming into town. The chance that I'll be able to sneak off and geek out writing about OpenGL ES are slim to none. But never fear, more installments will be forthcoming.