Hi @cobalt
There isn’t any official guides for Windows. There are some topics in the forum, like Run Metabase as a windows service!.
But basically you just start Metabase with this (change the connection details):
java -DMB_DB_CONNECTION_URI="postgres://dbuser:dbpassword@localhost:port/mydb" -jar metabase.jar
For reference: https://www.metabase.com/docs/latest/operations-guide/environment-variables.html#mb_db_connection_uri