Primers for Entering The World Of Web Development?

SecretAsianMan asks: "In the early days of the Web, being a webmaster required only a basic knowledge of HTML and some skill in graphics. Many programmers, myself included, scoffed at so-called 'web programming', considering it highly unworthy of the name. While we were busy scoffing, the Web grew up. Today's Web is much more than a collection of static HTML documents; it is dynamic, interactive, and filled with enough buzzwords to make your head spin. I'm considering retargeting myself to web development in order to open up more job possibilities. What should I learn, and in what order? What is the best method to fast-track into web development?"