i'm retiring these from my sidebar as i don't use the sewing ones so much any more and crochetme is easy to remember. but still, very helpful sites and might well need them for reference.
crochetme: online crochet magazine
kate's info pages: lots of sewing how-tos
learn to sew: sewing.org's basics
sew what's new: beginner sewing lessons
threads: lots of good articles