How in lord's name do you select the surface of a solid?

After watching a video of someone manipulating the surfaces of a solid he extruded, I’m trying to figure out how to select just the surface of a solid with a single click.

Here is the video, and he does the selection at exactly 4:23.

Is there some “select surface on-click” option that I don’t have turned on? When I click it just selects the whole object.

Any help would be great!!

CTRL + Shift + click ?


You’re a gentleman and a scholar, thanks a lot man!