This document discusses how to build Windows 8 apps using existing HTML, CSS, and JavaScript skills. It recommends learning common Windows 8 features like tiles, WinJS controls, and supporting different device states and orientations. The document demonstrates turning an existing website into a Windows 8 Store app in 3 steps: using existing HTML/CSS skills, adding WinJS and controls, and deploying the app. It also covers contracts, tiles, and dynamic tile updates.