Originally Posted by Werewolf

This is more than enough for you.
this will prepare you for essay, current affairs, pakistan affairs (partly), islamiat (partly), English precis and composition (partly)

if you want to step further, you may start some good encyclopedia, download some international one and start studying it. you will enjoy it + it will help you a looooooot in EDS and other optional science subjects like Psychology and Geography.
just study it for sake of knowledge irrespective of paper pattern or syllabus. this is an awesome thing.

i have a few books in softcopy. if you want them, tell me, i'l mail you