HTML : Introduction

Stands for ...

HyperText Markup Language

Sounds like SGML (Standard Generalized Markup Language)...

Abbreviation of Standard Generalized Markup Language, a system for organizing and tagging elements of a document. SGML was developed and standardized by the International Organization for Standards (ISO). SGML itself does not specify any particular formatting; rather, it specifies the rules for tagging elements. These tags can then be interpreted to format elements in different ways.
Source: http://info.borland.com/techpubs/books/vbj/vbj40/programmers-guide/glossary.html

Visual vs Logical formatting of text/ideas : logical structure

Origins in CERN ( Tim Berners-Lee : a collaboration tool )

First GUI web browser was NCSA Mosaic

Later driven by Netscape and Microsoft IE

Standard published by W3C

4.01 is the most recent version of HTML

HTML is the lingua franca for publishing hypertext on the World Wide Web. It is a non-proprietary format based upon SGML, and can be created and processed by a wide range of tools, from simple plain text editors - you type it in from scratch- to sophisticated WYSIWYG authoring tools. HTML uses tags such as <h1> and </h1> to structure text into headings, paragraphs, lists, hypertext links etc.
Source: http://www.w3.org/MarkUp/

Reference : Web Wizard's Guide to HTML

List of references on HTML : http://www.vrarchitect.net/links/intern_html.en.html

For a good crash course on HTML : Dave Raggett