Dance Mat Typing, a fun way to learn touch typing  from the BBC

There are four levels to play, each divided into three stages.

You start by learning the home row keys. Each stage builds on previous lessons, introducing new letters as you progress. You’ll soon be touch typing like an expert! At the end of each level you can test your typing speed and get a fun reward.

http://www.bbc.co.uk/guides/z3c6tfr