I am happy to hear any suggestions you might have on how to improve navigation on revitapidocs.com or somehow make it easier for new users.
That said, Api Docs is more of reference resource than a learning resource and it is simply a more polished version of the official Revit API Documentation
If you are struggling to understand how to use the API Documentation I would encourage you to spend some more time going through less technical resources first - this might be a good place to start: