This document provides an overview of Module 4 which covers product design, brand identity, and marketing. It discusses product and user interaction, how users perceive products through branding, and the visual elements that communicate a brand such as color, typography, and symbolism. The module also addresses designing logos, signage, stationery and flyers to market products. Finally, it outlines assignments related to logo design, creating online marketing flyers, and analyzing branding and marketing within physical and virtual spaces.