Gothenburg - things to do

Hi, I want to visit Gothenburg and could you give me some piece of advise about things to do there?

Go to the park with beer lol...

Depends what you are in to, Liseberg is an ok theme park only if you get the gold pass or you will have about 1-2 hour queue times, but if you don't go on rides its fine with an entry pass only.
Universium is another good place to have a look at if you are into animals etc. its right next to Liseberg to :D