No, the Arbor knot isn't named after Ann Arbor, Michigan or Arbor, California. The word "Arbor" refers to the central post of a fishing reel to which the fishing line is attached. It's a typical fisherman's knot, and Wade Bourne of MyOutdoorTV is going to show you how to tie it.
The Arbor Knot is used to tie new line to the reel. It's the first knot you need to learn. It doesn't have to be that strong. And it's easy to learn. That makes it a pretty good knot to start off with.
Run the line around the spool hub (arbor), then take the tag end around the standing part of the line and tie an ordinary, everyday, overhand knot. Tie a second overhand knot in the tag end as close as possible to the first one. Pull on the standing part of the line and jam the two knots together against the spool of your reel.