If public transport mapping is your goal, it might make sense to try out the MapComplete Train Station https://mapcomplete.org/stations and Bus Routes https://mapcomplete.org/transit themes which give an easier, more focused, mapping interface. Quest apps like Street Complete can also make getting into OSM a bit easier, though OSM Beginners Guise is great too. https://wiki.openstreetmap.org/wiki/Beginners%27_guide