Learning to touch-type properly is a great way to increase your per-hour output (if you are a person who uses a computer that is), and typing.com is a great website that teaches you to touch-type, and allows you to practice and continue to increase your typing speed and accuracy. Signing up for a free account is a great way to track your progression, but you don’t have to join to access the lessons.
I developed my own “style” of typing in high school, chatting with friends on MSN. Although I got relatively quick, I had a lot of bad habits, and would always have a limited ceiling on my words-per-minute speed. I have been learning to type the right way thanks to daily practise on typing.com.