Consistency and practice. Four things that improved my typing dramatically:
Find a comfortable keyboard that
fits your hands very well. It's less
about ergonomics or split keyboards,
but more about finding one with perfect finger reach. And this means using the keyboard for a couple weeks to see if it fits. Once you pick a keyboard, use it 100% of time. Have the same keyboard at home and work.
Make sure your workstation is
properly fitted to you. Basically, follow any decent ergonomics guide (90 degrees everywhere is WRONG!!!).
All of this "ergonomics" stuff has the benefit of stress on the rest
of your body that can distract you or cause muscle fatigue (i.e. slower typing). Again, use the same workstation configuration everywhere--if that means getting the same expensive chair at home, do it.
When emailing, chatting, and posting, use complete words and sentences. Abbreviations, slang, and other "shortcuts" taught me a lot of bad typing habits and made me lazy. They also had a lot of awkward letter combinations that didn't show up in other places, including normal composition and coding.
Consistency. Use the same tools with
the same settings and shortcuts all
the time. The less time you spend
worrying about how the software
works and reaching for the mouse,
the faster your typing will be.
