After you sign up, you can edit your profile information by clicking on your login name in the upper right corner.
You can find your blog space by clicking on the blog tab, and then clicking on "Bloggers -- User Weblogs" on the right panel.
A photo album is also created for you automatically. You can find it by clicking on the "Photos" tab.
You can find your blogs and photos also by going to http://myselfspace.net/blogs/your-id and http://myselfspace.net/photos/your-id with your-id being, well, your id.
It is a good idea to go to your blog and your photo album, copy the address from the address bar, and paste it into your user profile. This will help you and other find your areas.
The web address spot is a great place to add your external web site address. (Remember to start the address with http://)