Websites, Tutorials and Tools We Use and Love

Android

Tutorials (3)
Getting Started
Here you'll find sets of lessons within classes that describe how to accomplish a specific task with code samples you can re-use in your app.
An introduction to android development
Based on Android 4.1.By Lars Vogel. Development with Android and Eclipse. Basic Android User Interface components, Android Development Tools, Application Architecture, Installation, Layout Manager and ViewGroups, Fragments Tutorial, Tutorial: ActionBar and more!
Videos (2)
Android Developer Videos
Android Design for Success, for Engineers, Navigation in Android, Playing with Patterns
Android Developers Youtube Channel
This is the home for Google+ Hangout videos from different live events, as well as for videos containing demos, tutorials, and anything else related to Android development.
Books (3)
Professional Android 4 Application Development
Publication Date: April 13 2012 | Series: Wrox Professional Guides
Beginning Android 4 Application Development
By Wei-Meng Lee. This fast-paced introduction to the newest release of Android OS gives aspiring mobile app developers what they need to know to program for today's hottest Android smartphones and tablets.
Tools (3)
Official Android Tools page
The Android SDK includes a variety of tools that help you develop mobile applications for the Android platform. The tools are classified into two groups: SDK tools and platform tools.
Android SDK
The Android SDK provides you the API libraries and developer tools necessary to build, test, and debug apps for Android.
Websites (2)
Android Developer Resources
Official Android Developer Resources. Tutorials, Videos, Training, Documentation, Tools, Downloads.
ActionBarSherlock
Must have for backwards actionbar compatibility. ActionBarSherlock is an extension of the support library designed to facilitate the use of the action bar design pattern across all versions of Android with a single API.
Blogs (3)
Android Developer Blog
Official Android Developers Blog
Android Official Blog
News and notes from the Android team
Android and Me
Plenty of Android related material
Communities (2)
Android Developers
Android Developers Community on Google+
Android
A place for Android fans everywhere to meet, share and get the latest on all things Android.

iOS

Tutorials (5)
In-house App Development Accelerator Guide.
Kickstart your in-house development efforts by exploring each phase of the development process. Plan, Design, Develop, Deploy.
iOS Developer Center
Official iOS Developer Center
iPhone Tutorials
This site contains a ton of fun tutorials. Beginning iPhone Programming,iOS 5 Tutorials, iOS 6 Tutorials, iPad Development and many more!
Videos (2)
iOS Developer Videos
WWDC 2012, WWDC 2011, WWDC 2012 Videos. iOS Videos.
Apple.com iOS Videos
Official Apple Videos page
Books (2)
The Core iOS 6 Developer's Cookbook (4th Edition)
By Erica Sadun
iOS Programming: The Big Nerd Ranch Guide (3rd Edition)
By Joe Conway and Aaron Hillegass. Winner of a 2012 Jolt Productivity Award!
Tools (1)
Official iOS Developer Tools page
Xcode IDE, Instruments for Performance and Behavior Analysis, iOS Simulator
Websites (2)
Official Apple Website for Developers
iOS Dev Center, Mac Dev Center, Safari Dev Center
iPhone Life Magazine
The ultimate destination for iPhone and iPod touch users, featuring iPhone Life, the only print magazine for iPhone and iPod touch users.
Blogs (1)
Mac Rumors
Mac Blog, iOS Blog. Boasts an active community focused on purchasing decisions and technical aspects of the iPhone, iPod, iPad, and Mac platforms.
Communities (1)
iOS Developers page on Google+
iPhone/iPad Apps Development Blog - Hire iOS Developers
UI Design (10)
iOS 6 GUI PSD (iPhone 5)
Photoshop file with lots of GUI elements to build interface layouts of iPhone Apps in Photoshop
iOS 5 GUI PSD (iPhone 4S)
Photoshop file with lots of GUI elements to build interface layouts of iPad Apps in Photoshop
iPad GUI PSD (Retina Display)
This Photoshop template makes it easy to mockup retina display iPad apps.
UI Components & Frameworks (2)
«Three20»
Three20 provides powerful view controllers such as the Launcher, the popular Photo Browser, and internet-aware tables.
NimbusKit
Well-documented, modular components: a rich text label with hyperlinks; a web view controller; a simple approach to table models, radio groups, and table actions; standardized interapp communication, and powerful debugging tools.

Windows Phone

Tutorials (3)
Windows Phone Dev Center
Official Windows Phone Dev Center. Getting started with developing for Windows Phone.
User Experience Design Guidelines for Windows Phone
Official Windows Phone User Experience Design Guidelines from MSDN.
Videos (1)
Windows Phone Dev Videos
Best Windows Phone development videos here to help you learn about the platform, tools, and tips and tricks for writing great apps and games.
Books (1)
Professional Windows 8 Programming
Application Development with C# and XAML by Nick Lecrenski, Doug Holland, Allen Sanders, Kevin Ashley
Tools (3)
Windows Phone Toolkit
The toolkit includes open source code, samples, docs, and design-time support for the Windows Phone platform.
Windows Azure Toolkit for Windows Phone
The toolkit includes project templates for Windows Phone and Windows Azure, class libraries, samples, and docs for key scenarios, such as auth, push notifications, and cloud storage.
Websites (3)
Official Windows Phone Dev Center
Submit App, Get SDK, View Code Samples, Blogs
Windows Phone Dev Downloads
Developer downloads for Windows Phone
Blogs (1)
Windows Phone Developer Blog
Official Windows Phone Developer Blog
Communities (2)
Windows Phone Communities
Development forums, Dev Center forums, Developer blog, Twitter, Facebook page, Registered developer newsletter.
Forum - Developing for Windows Phone
General questions regarding developing apps and games for Windows Phone

Market your Mobile App

Tutorials (3)
A Marketers Guide to Selling Your Mobile App (Without Apple)
An interesting article on how to market your Mobile App outide of Apple App Store
50 ways to promote your iPhone app
Even more ideas on ways to market your Mobile App
81 ways to market your mobile app
Less descriptive but a longer list of possible marketing activities