HTML tags are keywords surrounded by angle brackets, such as <html>;
HTML tags usually appear in pairs, such as <a></a>;
The first tag in the tag pair is the start tag and the second is the end tag;
HTML headings are defined by tags such as <h1>-<h6>;
HTML paragraphs are defined by <p> tags;
HTML links are defined by <a> tags;
HTML images are defined by <img> tags;
HTML tags are not case sensitive;
HTML can have attributes, and attributes are always in the form of name/value pairs, such as: name="value";
Attributes are always specified in the opening tag of an HTML element.