This document outlines 12 fundamentals for designing and marketing effective mobile websites. It discusses how mobile web usage is growing as more people access the internet on their phones. To stay competitive, companies need a mobile-optimized website. The tips provided include keeping the site functional, simplifying navigation and graphics for small screens, using responsive design, and capitalizing on location-based and social media features. Mobile search engine optimization is also important to consider. Following these strategies can help companies develop an engaging mobile presence and reach more customers.