I will write an article for you which contains 1500 words, and which explains the basics about PowerApps. This article will be unique and power user targeted.
If you are interested or need anything more, just let me know!
Dries wrote a wonderful post on PowerApps for me. He even delivered ahead of schedule and also agreed to some tweaks that I requested.
Please log in again. The login page will open in a new tab. After logging in you can close it and return to this page.