Are you new to quilting and the terms we quilters have come up with, well here is what I have found to be Fat Quarter 101. This article goes into detail of what a fat quarter is along with diagrams (pictures are always helpful).
I find fat quarters quite helpful in quilting, especially when you need a small amount of fabric or you just want a punch of something to add that pizazz to your project and your local quilt store won't cut you a small piece. I collect fat quaterts like I collect charm squares, layer cakes, jelly rolls, and fabric yardage. You just can't get enjough and why should we.