Foundation of Layout and Composition: Grids (video) by Sean Adams. The anatomy of grids and samples for posters, brochures, and websites that can be used in design. To access you will need to log-in to Lynda.com through your university. Sections 1 and 2 of this course will be most useful for beginners. http://www.lynda.com/Design-Design-Foundations-tutorials/Foundations-Layout-Composition-Grids/373790-2.html