This is not a Suggestion topic then. I changed it.
If you click on “Tutorials” on the top of this page it will take you to a page where the lead developer Dan has put some videos to help you get started understanding how to use Shotcut.
In regards to people sharing videos they made with Shotcut, there is literally a category here in the forum called “Made With Shotcut” where it’s people posting videos that they made with the program. Here is a direct link: https://forum.shotcut.org/c/made-with-shotcut
Here are 2 threads where people announce their youtube channels and that they use Shotcut to make their videos: