Depends on what you're looking for re accommodation, if you want more of a local feel, try www.airbnb.com, www.istopover.com or www.Crashpadder.com, where you can rent someone's apartment for a few days or www.couchsurfing.com if you're looking for a bed to crash in. Otherwise you can go with www.HostelWorld.com for cheap accomodation. about 9 years ago
when it comes to the transportation buy a public transport card at a cigarrette store not on the tram or bus since they are more expensive there.
when it comes to doing cool things for barely any money, check out www.amsterdamletsplnit.com almost 9 years ago