[blippage]

This topic has been touched on before, but what I do is use a paper-bound notebook. I number the pages.

The topics come in fairly random order. I keep a table of contents at front, and compile an index at the back as I go. After trying this system for a few months, I can attest that an index is, indeed, a useful thing. The great things about an index is that it allows you to find information based on multiple viewpoints.

The acid test of all these systems is "how useful have they been in practise?" As a lady in QA once sagely said: add value, not process. Or, as another poster noted, we have a tendency to fetishise different systems. As programmers, we're likely to be more guilty of this than most. But remember the whole point of the exercise. We're here to find information, not obsessively adhere to a system.