Step one: Browse to http://wordpress.com
Step two: Click on the huge sign up at the top of the page
Step three: Fill in the form. Decide on a funny blog name (like I did here – explained further in the about page).
Step four: Agree to the laegal flotsam.
Step five: Check your email. Find email from wordpress.
Step six: Click the activation link embedded in the email.
Step seven: Log back in to adjust all your your settings.
Step eight: Pick a wordpress theme from under appearance on the left hand menu. Decide on your widgets.
Step nine: Start writing your first post – just as I am doing now!