Assuming you already know a bit of C and that you like learning by tutorial I'd recommend working through "Cocoa Programming for Mac OS X" 3rd Ed. by Aaron Hillegass. You will get a good tutorial-based introduction to Objective C, Xcode/Interface Builder and the design patterns used to build both OSX and iPhone apps. (iPhone is not mentioned in the book at all but the general patterns are the same.)<p>Be sure to understand the retain/release memory model as the garbage collector is not avail. on the iPhone.<p>With the background you gain from Hillegass you'll find it very easy to pick up the differences between OSX development (which uses AppKit) and the iPhone development (which uses UIKit). There is a lot of good information found at the iPhone Dev. Program's website which bridges the gap.<p>The tutorial approach is always a little frustrating to me personally as often details are glossed over and the topics are not covered systematically but if you supplement the tutorial with the information provided by Apple you can resolve all the little annoyances as they come up.<p>Finally I recommend watching the videos Apple's prepared about iPhone development.<p>Good luck and have fun!
Check this out - hope this helps -<p><a href="http://www.webresourcesdepot.com/iphone-application-and-website-development-all-tools-and-tutorials-you-need/" rel="nofollow">http://www.webresourcesdepot.com/iphone-application-and-webs...</a><p><a href="http://icodeblog.com/category/iphone-programming-tutorials/" rel="nofollow">http://icodeblog.com/category/iphone-programming-tutorials/</a>
Lecture notes from the iPhone App class at Stanford: <a href="http://www.stanford.edu/class/cs193p/cgi-bin/index.php" rel="nofollow">http://www.stanford.edu/class/cs193p/cgi-bin/index.php</a>
A simple post from Flickr that I found here yesterday:<p><a href="http://code.flickr.com/blog/2008/10/27/lessons-learned-while-building-an-iphone-site/" rel="nofollow">http://code.flickr.com/blog/2008/10/27/lessons-learned-while...</a>
I've been reading the new Pragmatic Programmer book, which is still in beta form. The final printed book will be released in December 2008. It's pretty good, and walks you through step-by-step. I must admit, it's been difficult so far since I had zero experience with Objective C, XCode, Cocoa, etc., but hopefully the concepts will click soon.<p><a href="http://www.pragprog.com/titles/amiphd/iphone-sdk-development" rel="nofollow">http://www.pragprog.com/titles/amiphd/iphone-sdk-development</a>
I recommend you to enroll on the iPhone Developer Program (it's free if you plan initially to develop for the iPhone simulator only).
I recommend you then to download Apple's documents under 'Getting Started Documents', including memory management and play with the tutorials.
Apple has plenty of resources on their program, they did a good job supporting developers. Good luck!
It's still early days, but myself and Dan Grigsby launched <a href="http://www.mobileorchard.com/" rel="nofollow">http://www.mobileorchard.com/</a> a couple of weeks ago.<p>We already have an iPhone developers' podcast (first episode is an interview with Hampton Catlin, who's selling 1000 copies of his app each day) and are trying to link to interesting iPhone developer related stuff over time. It's getting better each week :) You can also follow us on Twitter at <a href="http://twitter.com/MobileOrchard" rel="nofollow">http://twitter.com/MobileOrchard</a><p>As an example of what we have, try: <a href="http://www.mobileorchard.com/9-places-to-publicize-your-iphone-app/" rel="nofollow">http://www.mobileorchard.com/9-places-to-publicize-your-ipho...</a> - 9 places to publicize your iPhone app :)
This is a related post I put together earlier this month: <a href="http://www.trending.us/2008/10/08/11-places-to-get-started-with-iphone-app-development/" rel="nofollow">http://www.trending.us/2008/10/08/11-places-to-get-started-w...</a>
The website is not that exciting, but the tutorial videos are amazing. I suggest checking out the alpha slider tutorial.
<a href="http://www.iphonedevcentral.org/" rel="nofollow">http://www.iphonedevcentral.org/</a>