There is documentation which you can check out: https://powerapps.microsoft.com/pt-br/search/documentation/
Are you going to make a course for other people to learn or to educate yourself on Powerapps?
I just replaced the language code (en-us) to the Brasil one (pt-br), like so:
This is what I could find:
but I'm not sure if it's up to date. If you're having problems, your best bet would be the documentation or the forums here 🙂
Fill out a quick form to claim your user group badge now!
Find out where you can attend!
Features releasing from October 2019 through March 2020
Learn how to build the business apps that you need.