The best source on the Internet for learning the tools for web development is W3Schools. This is a free and fantastic resource for anyone learning the ropes of web design using HTML, CSS, and more. W3Schools even makes available a developer certification certificate for proving your knowledge of HTML, CSS, and XHTML. I’ve been seriously considering sharpening my web coding skills and taking one or more of the certification exams in the future.
Whether you are a novice or a pro web coder, W3Schools is the best site to visit for all of your coding answers.