[morbidhawk]

I've done this recently for a few of the open-source third-party frameworks we use. I'll print out the source code and relevant unit test code for a particular class I'm interested in learning about (or in the case of js code I'll usually just print the entire file). I'll start by reading the unit tests first and then read the actual source. The real benefit of doing this is that I can easily write hand-written notes alongside code to come back and review later. I've found this way of note-taking to be superior to other note-taking tools that allow notes alongside code (like org-mode).