Stanford have a full course online for free:

http://www.stanford.edu/class/cs193p/cgi-bin/index.php

You should also look at these tutorials:

http://icodeblog.com/category/iphone-programming-tutorials/ http://www.webresourcesdepot.com/iphone-application-and-webs...

Apple has a whole developer center with forums, etc, and their documentation is really good too.

If you want something more general / third party, though, check out http://www.mobileorchard.com/ - it's a site I'm involved with, but we try to be objective.. (pun semi-intended ;-)) We cover higher level stuff mostly. Lists of resources, sites to check out, etc.

What I found useful when messing around with iPhone stuff was the pragprog iPhone SDK book, Erica Saudin's iPhone developers cookbook and just reading Apple's documentation on the subject I was working on.

If you want more mac side of things then iPhone, then i can't say enough good things about Aaron Hillegass' Cocoa Programming for Mac OS X book.

I second the Hillegass recommendation. Between that and example code and a lot of head scratching i think i finally understand the iPhone dev framework. I just put out my first app (iGo) and things are promising. We'll see but my hope its enough to cover rent (in SF mind you) and tacos.

Hey, what's the best place for tacos in SF?

I'm moving there from Cambridge, and I'll miss Ana's.

pancho villa at 16th & valencia is pretty good and la cumbre around the corner is also pretty good.

i also like the tonayense taco truck on harrison and the al pastor at san jose at 24th & mission is delicious.

if you want something a little less authentic but healthier seeming, try papalotes at 24th and valencia.