TheDorkGuide’s first project: How to use a coaster

I got a worrying tweet two days ago, a friend didn’t know how coasters worked. I did a quick Google search. Nothing!¬†How can it be that there is no blog or website explaining how to use a coaster in the most accurate manner. So I decided I should do it myself. Here it is DorkSide’s very own Guide on How to Use a Coaster: