Ok, I've never owned a laptop, so can't help you with trackpad functionality. Also, I'm not at my Mac. But, once you get control+click to work on the Stack, you should see a menu with two or three categories, and options under each one. Play around with them. You should notice changes. The "Display As" options will display the Stack as a Folder or a Stack. Kind of overlapping terminology there, but the difference is in the appearance of the icon in the Dock.