I don’t know if it classifies and tips and tricks for the platform, but here’s some helpful links to understand the platform better!
Here’s one to the help center, the testing guidelines, community guidelines and community wiki 
(Also you can tag others by using the @)
As for one of my favorite makes here on Ribblr I’m not sure if you’re asking for one of our makes or pattern but I’ll just share both 
(but honestly it’s hard to choose just one for both lol)
One of my favorite amigurumi makes:
One of my favorite amigurumi patterns: