Using local / regional libraries
Kooperativer Bibliotheksverbund Berlin-Brandenburg (KOBV)
The KOBV provides a portal to search most academic libraries in Berlin and Brandenburg, including BI, at the same time.
Freie Universität (FU)
Those officially registered in Berlin or in Brandenburg can obtain user cards at no charge on presentation of identification (Personalausweis; or passport in combination with official proof of residence (Meldebescheinigung)). More information can be found on their website.
FU Research Databases
Humboldt Universität (HU)
Any resident of the Germany who is at least 16 years of age may register to use the libraries of Humboldt University free of charge. For more information see, click here.