How to create a module

The official docs were actually a good starting point for me.

I just released my first module which has full commented code (http://leevigraham.com/ee-support/expression-engine-social-bookmarks-module/).

I also found the docs very helpful.

The one thing I had trouble with was the replacement of tags in the template. Once I figured out that a string was being passed into the method and that the main thing you do is replace parts of the string with values using regular expressions and replace methods I was on my way.