The Finnish capital Helsinki has an integrated public transport system where tickets are valid on all mode of transports whether trams, metro and buses. It had the easiest transport system I have taken from the airport to a city as a tourist.
Walking – If you are fit enough and have the ability to walk around for long distances, then I believe walking around the city is the best way to get around. Take stops in a few places for rest and you should be fine for a whole day.
Trams – For those unable to walk then I’d say trams are the best mode of transport to use within the city. They come often and are easy to use but remember to purchase your ticket before getting on. One thing to remember is that like any public transport around the world you can expect busy periods where the trams get very full.
Trains – Better for longer distances like the airport, or other regions. Again very easy, just buy your ticket ahead of boarding. There are no barriers but ticket inspectors and for passenger comfort there are power outlets, small tables, bins and lots of luggage space.
Metro – I didn’t really have the chance to ride these as walking and trams were sufficient to get around the place. I did notice that the Metro doesn’t cover a lot of destinations. The Helsinki metro is the worlds northernmost metro system.
Bus – As trams were already a brilliant way to travel, I didn’t really have the chance to try their buses.