For the most part, this seems like a good primer on what the territory would be for people entering this space.

I feel like the easiest "Hello World" for newbies would be taking a simple full stack app and interfacing Blockstack as the back end:

https://docs.blockstack.org/browser/hello-blockstack

But the information in that Medium post is great for those who want to know where to dive deeper for developing things from scratch.