Learn the fundamentals of CSS selectors in this beginner-friendly tutorial video. Explore various types of selectors, including element, class, ID, group, and nested selectors. Understand the universal selector, cascade, specificity, and inheritance concepts. Discover how to check selectors in developer tools and use a specificity calculator. Gain practical knowledge on applying CSS selectors effectively while avoiding common pitfalls. Follow along with hands-on examples and enhance your web development skills in just 21 minutes.