Prerequisites
Before we start, we will need to get the latest Unity version. You can always download it from http://unity3d.com/unity/download/. At the time of writing this book, the page looks like this:
Once you get to this page, click on the CHOOSE YOUR UNITY + DOWNLOAD button (this page onward, I will be using the PERSONAL EDITION version). Then, click on the DOWNLOAD INSTALLER option.
The download assistant should be installed from your default downloads directory. Once it is installed, double-click on the file to open it.
Once there, go through the installation using the default properties. At the time of writing, we are using Unity 5.0.0f4, but most things should work with minimal changes but be sure to check out the book's website to check for any errata.
Since it needs to download Unity, this process may take some time.