@bcartwri96 I think the long and the short of it is that there is very little in the way of comprehensive documentation for Discourse’s Plugin API.
There are bits and pieces of information here on Meta, such as Beginner's Guide to Creating Discourse Plugins - Part 1 but there is no comprehensive API reference it would seem. Although some of what is happening is plain Ember or Rails, there is a huge amount in between which is pure Discourse convention.
Over time it would be good if the community could perhaps work on a Discourse Developer Manual that would fill this gap. We’ve put some of that into practice in terms of fragments of HOWTOs at Dev - Pavilion and hopefully some of that work is the initial groundwork for developing a more comprehensive reference guide.