By Unity Technologies on unity3d.com
More about this content:
In this step you'll learn about Manual Scripting API and Unity Manual. Manual Scripting API is a system that stores and handles Tile assets for creating 2D levels. Unity Manual is a collection of tutorials and guides on how to use Unity. It covers topics such as fundamentals of GameObjects, scripting, sprites, building in-game environments, character animation, graphics, physics, audio, user interface, profiling, optimizing and testing, and publishing.