I'm going to study in Berlin for 6 weeks and I had a couple of questions for people that have been to Berlin before or live in Berlin.

1) What should I check out while I am there? I hear there are a lot of museums, which are the best?

2) I will have a lot of free time while I am there, what other cities or towns should I visit in Germany?

3) Is Basketball popular in Berlin and are there many courts to play at indoor/outdoor?

4) What are the best Night/Dance Clubs or Bars?

Thanks in advance