Some terrible advice on here. Amsterdam is an amazing city – lived there for many years, so I think I have a better overview on it than some on here who obviously haven’t seen it properly.
If you’re driving I’d park on the road in the New South near the WTC and get the number 5 tram into the centre.
There’s loads more to do in Amsterdam in comparison to the other cities/towns mentioned (with the exception of Rotterdam, which is large but nowhere near as attractive).
I’d head to the Jordaan for sightseeing, have a drink at De Jaaren and maybe take in a museum at Museumplein before a wander through the Vondelpark,
JP