Follow the tutorials by clicking on one of them above. There are currently a couple of basic walkthroughs to get you started. More tutorials will be added in the future.

To learn more about how Apparance integrates into Unreal dive into the Unreal Manual.
Or visit the Apparance Concepts page to learn more about the procedural mindset.

If you find the tutorials are not enough to help, have a look round the Apparance Forums and maybe ask a question.