We strongly advise you to watch this help video to understand the advanced features comes with Rock Page Builder V2. However, if you don't want much details and start it right away, you can follow this page for main features.
It is very easy to use Rock Page Builder. It is working with Drag and Drop, Drag and Droll and Quick Move. But before using it's full power, you should learn the basics. You can ofcourse start to use it right away without any additional information. This information will boost the power and usability of the Rock Page Builder.
Below here you will see a structure for understanding the areas used in Special Grids.