the one thing I wish I had learned in the beginning is how to knit continental style. Right now I'm a "thrower" which means I knit with the yarn held in my right hand. continental knitters are "pickers" and the yarn is held in the left hand. It may take a little longer to learn if you're trying to learn it on your own but it is such a time saver on those knit one purl one ribs.
also, knittinghelp.com is a great place to start! And if you have a local yarn shop... they usually offer free help if you purchase yarn from them