Embark on a comprehensive 8-hour tutorial series designed for beginners to master the fundamentals of HTML5 and CSS3, the core languages of web development. Begin your journey into web creation by learning to build your first website, validate code, and understand essential HTML elements such as headings, paragraphs, and lists. Progress through lessons on incorporating multimedia, including images, videos, and audio. Dive into CSS to style your web pages, exploring topics like external stylesheets, the box model, background images, and advanced selectors. Apply your knowledge to create layouts, style tables and forms, and utilize semantic tags for better structure. By the end of this extensive tutorial series, gain the skills to modify existing websites or lay the foundation for a career in web development.