We need a richer documentation (not only Store API mentions) for app creators:

• Authentication flow explanation (with images);
• Publish to Market for merchant installation;
• Paragraph about Application Starter and benefits;
• Videos with Application Starter and from scratch using some tool to debug requests;

Public RequestBin endpoint is a seems to be a good option for examples:
https://requestbin.com/r/enwoke6mykn58