There is a really instructive new series of videos from Channel 9 that walk newbie developers through the process of developing Windows 10 applications.

Your guide through the series, Bob Tabor from http://www.learnvisualstudio.net/, walks you through how to create Windows 10 apps on the Universal Windows Platform (UWP) – meaning you'll gain access to all the Windows 10 screens: PCs, phones, tablets, and even on a Raspberry Pi, HoloLens, and Xbox. Bob will challenge you with exercises, help you build a cheat sheet for future reference, and explain the techniques and concepts being used along the way in a simple, friendly manner.

If you have no C# experience at all then you may want to consider the prerequisite C# fundamentals course also on Channel 9.

All the source code is available on GitHub!