Here are a couple FREE websites that will help you improve your typing skills.
Rapid Typing Zone
Learn how to use your keyboard in a fun and entertaining way for absolutely free. RapidTyping is designed to teach adults and kids to use their computer keyboard more efficiently than ever. Learning to type can be easy and fun!
TypingWeb
TypingWeb is a free web service for those who want to learn quick typing. The site provides a variety of interactive tutorials for all levels (beginner, advanced, special). To begin, simply select the tutorial you want and start typing.
There is no registration required, however registering on the site lets you track your progress, access additional content such as games, custom typing skins and compete for your place in the Hall of Fame.