Hey William,
If you want to go out for a night, try the golden-gate club, it's brilliant.
In case you are looking for cheap clothes or want to get rid of yours, go to the 'Umsonst-Laden' in the Ackerstrasse. You can either bring your clothes there or get clothes (for free) - swapping is not allowed! So either bring or take, not both.
'Cafe Moskau' is quite nice, see if you can track it down, can't remember any street names...hope that helps, enjoy your stay.
Kat