Everything #OpenStreetMap related is welcome: software releases, showing of your work, questions about how to tag something, as long as it has to do with OpenStreetMap or OpenStreetMap-related software.
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Join OpenStreetMap and start mapping: https://www.openstreetmap.org.
There are many communication channels about OSM, many organized around a certain country or region. Discover them on https://openstreetmap.community
https://mapcomplete.org is an easy-to-use website to view, edit and add points (such as shops, restaurants and others)
https://learnosm.org/en/ has a lot of information for beginners too.
Running around with StreetComplete, the app sometimes tells me to leave a note instead, which I do. Short time later, I receive an email that another person has resolved my note. That's nice, but wouldn't it be better to do it all on my own?
I think I need a more powerful Editor for that, and installed Vespucci. Now I'm scared to break things. What are the next steps, how to proceed?
Welcome to the team! And also keep in mind that every mapper makes mistakes from time to time. It's not the end of the world. And if it's really something crucial then it will get fixed very soon ^^