Gary,
Great, I'm glad you got your avatar and Web site posted. Actually, I see your avatar but not the Web link.
Yes, there are a lot of details you can enter in your profile. My suggestion is for people to simply click on "PROFILE" from the main menu, then in the "Modify Profile" area, just go one by one through all the available options and add any information you want. You don't have to fill in everything, of course, but you should feel free to enter as much as you want.
If you have any questions about using the profile options, go ahead and post them. I'm sure other people have the same questions and could learn from the discussion.
Thanks,
Matthew