“What is it all about and what does it mean?”
HTML is a standard markup language for creating web pages. It stands for Hyper Text Markup Language. It's used for structuring and presenting content on the World Wide Web. HTML 5 is the fifth and current version of the HTML standard and represents both the new version of the language HTML, with new elements, attributes, and behaviors, along with a larger set of technologies that allow more diverse and powerful websites and applications.