The Stanford videos are great. Another good resource for screencasts is http://nsscreencast.com/

Also if you're looking for a good book about iOS http://www.amazon.com/gp/aw/d/1430236051/ref=redir_mdp_mobil...

For learning the ins and out of objective c I've heard this is a good book: http://www.amazon.com/gp/aw/d/0321706285

Good luck!