Quick reference guides provide one or two page condensed instructions. Formats for quick reference guides vary dramatically and can involve complex, multi-colored layouts, or just simple text callouts next to a few images.
The other day I stopped by a local thrift store (Desert Industries) and picked up a few magazines for $.25 cents a piece, looking for attractive layouts that I could use as quick reference guide formats. The format most appealing to me was this image from Fast Company:
A possible layout for a quick reference guide from a magazine
The quick reference guide I ended up creating in Adobe InDesign