Many lessons, tutorials and codesamples were based on my GLU 1.3 port for OpenGL ES 1.x CM, check it out here: http://glues.googlecode.com. Almost all tutorials rely on SDL 1.3 which is still being developed, but even now it supports OpenGL ES 1.x for at least two platforms: iPhone and QNX 6.4.x. Check out the latest SDL 1.3 sources at SDL SVN: http://www.libsdl.org/svn.php