title: Some tutorial for OpenGL ES 2 in Android with NDK?
body: <p>specifically I need to work with the Shading lenguage GLSL. I have already installed NDK, SDK and everything else and is runing ok, i ran an example with openGLES 2 using NDK and it works fine, the problem is that there are many instructions that I dont't undestand. so i need a tutorial or book that teach me that step by step</p>