dude. save everything. when i was writing my thesis (something that seemed soooooo important at the time, but now i can't even find the goddamned thing. i think it's collecting dust somewhere) i had it saved on my computer, i also had a printed hard copy and three backup disks. i had a friend the year before who lost 60 pages of hers in a disk crash, so i learned.
mmm. yeah. you know what i save? class notes. i don't know when i think i'm ever going to need them, but i guess it's comforting to have all that learning nearby.