Knitty, MagKnits, and Knitters Rview are all free and online, so definitely bookmark those. Knitty and MagKnits have good patterns, and Knitters Review has great reviews on yarn, needles, accessories. Knitty also has a lot of good features on techniques and other knitting related items.
The only print magazine that I subscribe to right now is Interweave Knits, I really like the patterns and the way it's put together. Vogue Knitting, I'm sure, is a standard one, so you can't really go wrong with that one either.