Originally Posted by
enviroian
How does DB compare to Trenatalia?
In what way? The journey here takes place in a local train. Here you can get there with a public transport ticket, the most helpful in my opinion is the homepage of the Munich public transport company.
https://www.mvv-muenchen.de/en/index.html
There is even a dedicated homepage on German:
https://www.s-bahn-muenchen.de