Hi,
I'm looking at jumping on the band-wagon and knock out a couple iPhone and Android apps.
I'm not a complete beginner as I have programmed in quite a few languages, with my current focus on PHP and Drupal development, but I have not developed for either the iPhone or Android before.
I have downloaded the respective SDKs, but I was hoping to find some good quality tutorials that with step-by-step guides getting your development environment up and building your first app.
Great tutorials listed by order in which they should be viewed.
Best place by far for iPhone development is the Stanford University iPhone Application Development class videos hosted on iTunes U. There are 18, hour long videos along with class notes. The classes were filmed in the Spring of 2009 and currently they are filming their second semester which covers the features of the iPhone 3.0 SDK.
In addition to the video's, some of my favorite resources are.
The iPhone documentation actually comes with a lot of sample code. It's most easily explored by going online to http://developer.apple.com and looking for the tutorials there (you have to register as a developer, then request access to the iPhone portion of the portal (that part is free as is the SDK/Simulator download).
Also, when you search the docs for a class like NSString, it will often have links to sample projects that illustrate the use of the thing.
You really should check out the free online training starting tomorrow here (http://training.oreilly.com/androidapps-java/)
I really liked this tutorial on makeuseof: http://www.makeuseof.com/tag/write-google-android-application/
You learn to set up your whole environment (JDK, Android SDK, Eclipse) and start with a simple Hello World App. If you are completely new to this, it might be a great start for you.
I started off developing iPhone App's by going through the tutorials @ http://icodeblog.com/