->Download Windows Phone 8.1 SDK from here.

->Windows Phone 8.1 Code Samples http://code.msdn.microsoft.com/wpapps/site/search?f%5B0%5D.Type=Technology&f%5B0%5D.Value=Windows%20Phone%208.1

->Jumpstart sessions are great sessions that help get devs on the right track to get started developing for Windows Phone 8.1

If you already registered to Jump Start sessions by Andy Wigley and Matthias Shapiro,  you will be able to download these slides, if not no problem, You can Download JumpStart Slides from here.

->Thanks to Sherif El-Mahdi, MEA DPE Intern, for consolidating the below list of //Build/ Windows Phone Sessions if you missed any of them:

The New Windows Phone Application Model
http://channel9.msdn.com/Events/Build/2014/2-509

Windows Runtime for Windows Phone Developers
http://channel9.msdn.com/Events/Build/2014/2-550

Developing Apps using the Common XAML UI Framework
http://channel9.msdn.com/Events/Build/2014/2-507

What about XAML UI and Controls?
http://channel9.msdn.com/Events/Build/2014/2-516

Using Visual Studio to Build XAML Converged Apps
http://channel9.msdn.com/Events/Build/2014/3-591

From 4 to 40 inches: Developing Windows Applications across Multiple Form Factors
http://channel9.msdn.com/Events/Build/2014/3-541

Animations in Windows Phone XAML Apps
http://channel9.msdn.com/Events/Build/2014/3-554

Navigation Model for Windows XAML Applications
http://channel9.msdn.com/Events/Build/2014/2-537

Live Tiles Enhancements
http://channel9.msdn.com/Events/Build/2014/2-523

Contracts and Pickers: Building Apps that Work Together on Windows
http://channel9.msdn.com/Events/Build/2014/2-520

Dealing with Data: Storage, Roaming, and Backup on Windows and Windows Phone
http://channel9.msdn.com/Events/Build/2014/2-522

User Data Management in Windows Phone
http://channel9.msdn.com/Events/Build/2014/2-566

Modern Camera and Imaging Apps in Windows and Windows Phone
http://channel9.msdn.com/Events/Build/2014/2-525

Integrating Your App into the Windows Phone Speech Experience
http://channel9.msdn.com/Events/Build/2014/2-530

Building Geo-Aware Apps with Maps and Geofencing
http://channel9.msdn.com/Events/Build/2014/2-526

Multitasking and Triggered Background Tasks for Windows Phone Apps
http://channel9.msdn.com/Events/Build/2014/2-518

Mobile Push Notifications to Any Client with Azure Notification Hubs
http://channel9.msdn.com/Events/Build/2014/2-616

Notification Platform Development on Windows
http://channel9.msdn.com/Events/Build/2014/2-521

What’s New with Windows Phone Silverlight Apps!
http://channel9.msdn.com/Events/Build/2014/2-517

Quality and Performance for XAML Apps
http://channel9.msdn.com/Events/Build/2014/3-545

Windows Phone and Windows: Store and Dev Center
http://channel9.msdn.com/Events/Build/2014/2-512

Tips and Tricks in Visual Studio 2013
http://channel9.msdn.com/Events/Build/2014/2-582

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Mohamed Yamama,   
@m_yamama

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