Reddit reviews OpenGL ES 2 for Android: A Quick-Start Guide (Pragmatic Programmers)
We found 2 Reddit comments about OpenGL ES 2 for Android: A Quick-Start Guide (Pragmatic Programmers). Here are the top ones, ranked by their Reddit score.
Pragmatic Bookshelf
I really like this book. It builds everything up nicely and in general just teaches the topic really well.
I don't know of any free resources that cover that in much detail, but this book does a pretty good job:
https://www.amazon.com/gp/aw/d/1937785343/