The easiest way to get started is to clone https://github.com/ysulyma/rp-tutorial, which is the video on the homepage. You can use that as a sample project structure and modify it to your needs. The source code demonstrates how to use a lot of the different features.
The deep dive goes fairly comprehensively through the entire process of creating, recording, and mastering a ractive. It also explains how to use several of the plugins/utilities.