Yeah I do the same as above.......
Right now tho.......im making sure I relate wot im studying to the syllabus, that way I no that im not wasting my time on things I dont need 2 no! Nd it also comes in handy for Physics where there are a lot of big mark questions in an extended response format.
Anyway, all I do 2 do this is read over the syllabus dotpoints nd then look for the information which answers the points, which is done using my textbooks! Its pretty easy once u get into the swing of things !