If you want to start leveraging the power of Drupal Entities, you may feel a bit overwhelmed when you start to delve in the code. After conducting your own research and reading through a few tutorials, my biggest tip is to download the model entities module. First of all it will give you a greater appreciation of what can be achieved with Drupal Entities, by setting up an entity type in the administration area, adding fields, and adding data with the model add form. The module will give you an example of how entities integrates with views. In my opinion this is very useful because there doesn’t seem to be many examples of views integration with entities.

Download the module at http://drupal.org/project/model