Add an "About Me" widget to your sidebar.
Drop the about-me-widget folder into your wp-content/plugins folder
Go to your Administration:Plugins page and activate the About Me Widget
Go to Admin:Appearance:Widgets
Move (drag and drop) the widget to where you would like it in your active sidebar.
Click on the config button for the About Me widget (little notepad icon thingy on the right)
Enter the title you want visitors to see on the sidebar
Enter a url you would like the title to take you to (if you have more detailed 'About Me' page
Click in the editor window and start designing your own widget!!!
To put together a generic 'about me' design:
Select the image icon above the editor (looks like a tree)
Enter the URL (path) to the image (relative is fine, e.g.; /wp-content/uploads/portrait.jpg)
Enter Image Description, Title
Select the appearance tab and use the pull-down menu to apply an alignment class
Click the Update button
Back in the editor now, type some text (a blurb about yourself or your site).
Hi-lite the text and use the pull-down styles menu to apply alignment class/style
Add some links, if you wish, then repeat #7 to the link/anchor text.
Close the config window when you're finished and hit the Save Changes button