This document provides an introduction to HTML5, including: - A brief review of common HTML4 tags and their functions. - An explanation of what HTML5 is and why the shift to HTML5 from previous standards. - An overview of new features in HTML5 like new media elements for embedding video and audio, canvas element for graphics, and forms. - Details on getting started with HTML5, including using the simplified DOCTYPE declaration and common tags in the head section. - Examples of using new HTML5 features like inserting audio and video, and demonstrations of HTML5 forms and browser support. The document concludes with previews of topics to be covered in future sessions, including