Building a new feature on the Debut specification can allow you and others to use it alongside other Debut features in building a cohesive set of site features.
The first steps in building a Debut features are:
- Spend some time with the Debut spec--see the link on the Debut project page.
- Install and play with some existing Debut features and look over the included components (fields, views, contexts, etc.). Get a feel for how they're built and how they fit together.