The "relevant" xkcd: http://xkcd.com/882/
5 karma · joined August 31, 2014
Highly recommended book that changed the way read (I take notes and put them on flashcards).
The main point is that effortful retrieval practice is the key to learning effectively for the long-term and such that what you're learning can readily be connected to other ideas.
When practicing retrieval (quizzing yourself), he suggests:
1) spacing practice sessions so that it's hard but not impossible to recall 2) interleaving subjects (frustrating, but memories are much more durable and you can more readily connect leanrned ideas with others) 3) varying how you practice (same benefits as above) 4) rephrasing in your own words and attempting to solve tough problems before knowing the solutions