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?
There are a lot of tools to monitor changes in osm, To check notes regularly you can use several tools, they are listed in the wiki: https://wiki.openstreetmap.org/wiki/Notes#Monitoring_notes_in_a_selected_area
For checking all changes on the map there are other tools: https://wiki.openstreetmap.org/wiki/OSM_viewer#OSM_changeset_viewer
I personally use osmcha.org regularly and an rss feeds of notes, in my area.