I order all my 'stuff to learn' under a category in my Getting Things Done (GTD) workflow. I use Due Today for Android and Toodledo online (they sync automatica

I order all my 'stuff to learn' under a category in my Getting Things Done (GTD) workflow. I use Due Today for Android and Toodledo online (they sync automatically), and a bunch of paper scraps to transfer from whereever it is that I want to record things until I can enter them into the One True repository.