well, it really depends on the kind of metarial. from my experience the easiest kind to activate metarial was my school books.i think it happened so because you get to have frequent exposure to this metarial. technical books that are loaded with small bits of info usually takes me more time(kinda duh

)..with some small technical books with details i would usually prefer to read it normally (only if it would take me 20 min or so) because i know the system wasn't made for this part. if you'll tell me what kind of metarial you are aiming at i'll tell you what i have experienced.