Transportation in Vietnam may not rate as the best in the world. But, easy for you can get flight to come in and you can get by quite easily in the cities. Taxis are by far the most convenient mode of transportation and not expensive.
If you want to try and be a little different, then the cyclo (three wheels) or pedicab is an interesting and enjoyable way to explore a city. These are available at all street corners and can be the best way to see a city rather than whizzing around in a taxi. Alternatively, you can also go by the motorbike taxis.
A must do is to take the boat tours which are available for many destinations. To getting the high land of Vietnam, you can take a night or day train, with luxury cabin (air condition…) the train will make you fell comfortable. From Vietnam, if you want to go to some country near Vietnam (China, Lao, Cambodia, Thailand), flight or train is best choice.