As you enter Unity for the first time, you might think you'll need to build and code everything from scratch. However, Unity comes with several collections of content called Packages, designed to save you time when implementing commonly required features.
Let's find out what's inside Unity's standard packages:
Unity makes implementing commonly requested features easy by making them available as packages ready to be imported and used in your project. These packages include First-Person and Third-Person Character Controllers, Image Effects (Pro Only), Terrain textures and assets, Skyboxes, Water, Tree Creator, and more.
There are other ways to learn from ready-made material. Here are some:
Unity also comes with a sample project ready to be dissected by you. It automatically opens the first time you start the software.
You can find and download even more resources, such as packages, projects, tutorials and assets, from Unity's resources page at http://unity3d.com/support/resources/.
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