Beginning GIMP: From Novice to Professional is a comprehensive but clear, concise, and attractive guide for absolute beginners (who have never edited an image before) to learn using GIMP (GNU Image Manipulation Program), an increasingly popular free and open-source image processing application, from scratch.

The free admission of the commercial 3D game development engine Unreal Engine has attracted more independent game developers, with the majority studying Unreal Engine on their own. Under such circumstance, a well-written guide book becomes very helpful or even necessary. If you are eager to use Unreal Engine to develop your own creative and attractive cross-platform games, then the Unreal Engine 4 Game Development in 24 Hours in Sams Teach Yourself series can be your first choice.

Android became the world's #1 and most popular mobile platform for smartphones, tablets, and smart TVs long ago. Whereupon, more and more people started out studying Android application development. At this point, a good book is very helpful. The Sams Teach Yourself series of books are all good, hence here AppNee recommends Sams Teach Yourself Android Application Development in 24 Hours to Android programming beginners (a bit outdated, but worth reading).

If Blender is the best free alternative of Autodesk 3ds Max or Maya, then GIMP is the best free alternative to Adobe Photoshop. Similarly, its powerful and numerous functions, complex features require special books to explain in depth, otherwise, it's extremely difficult to master GIMP. The Book of GIMP is one of the best few complete guide books about GIMP that cover almost any GIMP knowledge.

WPF (Windows Presentation Foundation) is Microsoft's user interface development framework based on Windows, belongs to part of the .Net Framework. It provides a unified programming model, languages and frameworks, indeed makes the interface design and the development work separate. Plus, WPF supports a brand-new multimedia interactive graphics user interface. As a major change in the Windows operating system, unlike the early GDI/GDI+, WPF is based on the DirectX engine that supports both software rendering and GPU hardware acceleration at the same time.