The data model is the place where you start building your data structure. This is a vital step, as a good structure will make life a lot easier in the next steps. Make sure you cover the following pages in order to grasp the basics of the data model and the potential it has.

Working with part models
Working with properties
Use the Catalog

Once this has been accomplished, it is recommended to move next to the Managing the explorer manual, where you will understand the concept of part instances and how they are connected to the data model