best place for books/textbooks

hey i was looking for a good site to get textbooks,etc from
im a college student and when books cost 200+ each it starts too add up not to mention im always on the lookout for solutions manuals
I've heard BitMe was great but its hard to get an invite so i was wondering if there were any sites that were just as good and possibly easier to get into

http://biztorrents.com/signup.php

http://ebooksshares.org/signup.php

http://theoccult.bz/signup.php

:)

http://filesharingtalk.com/vb3/f-gen...er-list-344292

thanks to both of you hopefully this can save me a couple hundred on textbooks per semester for the next few semesters!