...who can give some tips of stuff to do there or good places to go out to?

Going there next week!

I got an idea for ya...

http://www.youtube.com/watch?v=LBZITxVv5o4

All I could do there was smoke joints while looking at the canals.
Awesome atmosphere.

Ah... this might be useful https://www.facebook.com/greatlittleplaceamsterdam

Rainy weather, coffeeshops and the musea (Heineken Museum, take a boat trip around the canals, Rijksmuseum)

i just found my new fav-for-the-day-song http://www.youtube.com/watch?v=up8hYuyh0Ow&feature=related

coffeshops and red light district. I had a great 3 days in Amsterdam.

Remember that QHLAN held in Amsterdam a couple of years ago? Everyone had lots of fun, although no winner could be determined. Having spent a couple of hours in a nearby coffeshop before the games began, people just wandered around the maps staring at the walls at different angles: "zomg did you u see that awesum texture?", completely disregarding their opponents.

And they say one povdmm4 game ended 0:-1 when ParadokS fell into lava.

Nice beard!