Great points, along with greggman's http://webglfundamentals.org I'd also recommend http://http://learningwebgl.com/blog/?page_id=1217

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So I'm fond of the idea of being able to quickly get up and running with small modules, hence me working on things like this. Totally hear and agree with you on most of the WebGL being "hidden" here.

I hope to work on more tutorials that dive into how the sausage is made, but for now you can look at the implementation on GitHub -> https://github.com/chinedufn/load-wavefront-obj