I am going to Berlin from July, 21th to July te 26th.?

l am going to Berlin from July, 21th to July te 26th. What is there to do in Berlin other than the big tourist desnations, i have taken German and really would like to use what i know.

There is tons of stuff to do, and if you speak German it's going to be an even better experience.
The weather should be great, so you can mingle with the locals at the numerous Biergartens, pubs, and clubs, restaurants will have seating outside with candlelight and serve food till way after midnight. (for example: Prenzlauer Berg district) Pick up a Lonely Planet Berlin for starters on these and addresses) There are also tons of movie theaters in English and German (especially in the district Mitte/and Potsdamer Platz). In the summer, there is also Open Air Theater and Movies in a great atmosphere. You can tour the surrounding lakes and canals on boat -always a nice thing for the summer, or even rent your own boat (you do not need a license for a small motorboat). Go for a biking trip just outside of the main city with some newfound friends! Have fun!!!!!!!

As an American Soldier I lived in Berlin in the late 60's for 31 months.
Berlin is one the 3 hottest cities in the world. The other 2 are Tokyo and Montreal. The nightlife in Berlin is absolutely great for all ages. It can be expensive but quite nice. Report It

You will be pleasantly surprised. If you are very young, go walking by the Brandeburg Gate, Check Point Charlie, The Victory Column(tower)
and the Kurfustendam( main drag). The Kudam as Berliners call it has tons of shops and outdoor cafes. Report It

While you're at the Kudam visit the KADEWE dept store. Berlin's answer to Herod's. You should find something nice there and go to the top and have some pastry. Since you are going in July it will be quite hot with mosquitos. Report It

Also you can visit the Wansee and spend sometime on the beach.
But don't do as some natives do and change into your swim suit infront of everyone. Too many people from other countries there watching nowadays. The museum have great Greek artifacts. So much in Berlin. Report It

other then the tourist dstinations there is nothing to do

Try with the folling site ( also available in english)

http://www.berlin.de/

A good choice! Berlin is an amazing place with loads to see and do. Checkout http://www.jbb7994.com