Hi Chad! Make sure you have an edge selected before using the bevel tool. After entering edit mode you can deselect everything pressing A and then selecting the edge using the right click. Cheers!

I have trouble getting the bevel to work. The plane is extruded up 2 units in the same way it is in this tutorial. When I attempt to create a bevel is only acts on the top face, it doesn't come down the side at all. In other words, it isn't making a bevel. What am I missing? Thanks.