To find your way around the city
Online through https://www.oldenburg.de/startseite/buergerservice/geoportal/informationen-zum-interaktiven-stadtplan.htmlStadtkarten/Verkehrsmittel/Wege
You can find a city map for Oldenburg in exchange for a small fee for example in the Tourist-Information (Schlossplatz 16) and in the Service Centres of the VWG at the ZOB (central bus station) and in the city centre at the Lappan. If needed the most important points of the city can be explained there as well.