This book is a step-by-step guide for developing modern websites using HTML5 and CSS3. It covers the basics of HTML and CSS, explains core processes such as marking up text, images, lists, tables, forms, audio, and video, and delves into CSS3. The book also explores the jQuery library and how to implement powerful JavaScript features. It serves as the ultimate beginners guide for anyone who wants to build websites with HTML5 and CSS3, whether as a hobbyist or aspiring professional developer.