i have no idea how to fix a flat tire.

am i as pathetic as i think i am?

i want to start commuting to school, but i'm thinking i should know the basics so i dont get stranded and miss my classes because i dont know how to fix things.

is it hard? i see roadies doing it sometimes by the side of the road. it'd be nice to know i could help if i saw someone stranded somewhere, too. the rear tire intimidates me, because the guts are attached, and i'm afraid i'll successfully fix the flat, but will mess up the chain or something else important.