This is one of those tips I read and thought, "No way. I do that 1000 times a day, and I could have been doing it faster all this time?"
And, by the way, this tip works in Firefox as well as IE.
To get to the address bar (where you type in website addresses), just hit your F6 key.
It'll move you to the address bar, and even highlight the old address so you can start typing right away.