Between the metro, trams and bus, you can get anywhere in this city. But taxis are also quite cheap, as is Uber. The main reason I would use the metro more often than Uber is because traffic in this city can get really bad. I don't use the trams often but it's a cool experience to get one and ride it to the end of the line, just to get a view of other parts of the city.
By Camilla I.