[zJayv]

Few ideas:

* this one from Paul Graham: you retain more from reading than you think you do http://www.paulgraham.com/know.html

* this one from James Somers: actively engage (don't read without a pen and paper, explain stuff to yourself as you go) http://jsomers.net/blog/kenjitsu

To my mind, 'what' trumps 'how'. A casual reading of 'Mrs. Dalloway' brings a greater reward than n airport non-fictions.