Student Life in Berlin

Food

Mensa: http://www.studentenwerk-berlin.de/mensen/speiseplan/nord/index.html

Unisport

Do you want to free your mind from studying? The following list shows all possibilities to do sports offered by the universities of Berlin:

http://zeh3.hu-berlin.de/angebot.html
http://www.hs-sport.fu-berlin.de/
http://www.tu-sport.de/
http://www1.tfh-berlin.de/~zehsport/
http://www.fhtw-berlin.de/Service/Hochschulsport.html

Learning German and other Languages

There are various institutes who offer German courses on several levels. Especially interesting for a lower budget may be the offers of the Technical University, which also include Tandems, the language cafe and others:
http://www2.tu-berlin.de/fak1/skb/
http://www.imprs-cbsc.mpg.de/drs.shtml

Courses for other languages, including scientific english can be found here: http://www.sprachenzentrum.hu-berlin.de

Public Library & Ordering Books

Sometimes a good alternative to the university library and to the local DVD rental shop: http://www.voebb.de

In case you need a rare publication fast (you have to pay for this, though): http://www.subito-doc.de

Academic books at (sometimes) reduced prices: http://www.woetzel.de/

Getting Oriented

Maps city and public transportation: http://www.fahrinfo-berlin.de/Stadtplan/index

Maps campi:
CBB: http://www.charite.de/charite/standorte/campus_berlin_buch_cbb/lageplaene/
CBF: http://www.charite.de/charite/standorte/campus_benjamin_franklin_cbf/lageplaene/
CCM: http://www.charite.de/charite/standorte/campus_charite_mitte_ccm/lageplaene/
CVK: http://www.charite.de/charite/standorte/campus_virchowklinikum_cvk/lageplaene/

You might want to check out the students' self organization and representation of the medical faculty. They offer useful information and services:

http://www.fsi-charite.de/wb/
http://www.seg-med.de/

Fun

The comic strips about a grad stutent's life: http://www.phdcomics.com/comics.php