I found the book
OpenGL: A Primer to be a good introduction to the subject. I starts off with the most simple thing (drawing a white square on the screen) and progresses slowly from there, introducing new OpenGL calls and techniques as they are used. This is not a comprehensive OpenGL book, but it actually covers quite a bit, enough to keep you busy for a while. The code is also all non-platform-specific. There are a few quirks your need to discover when using OpenGL with Cocoa, but I didn't have a problem using it on a Mac.
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