This document provides an overview of steampunk by discussing its origins, key works, authors, and how it has evolved from a genre of science fiction to a broader cultural movement. It traces steampunk back to 19th century authors Jules Verne, H.G. Wells, and Mary Shelley, and highlights Nikola Tesla as a real-life proto-steampunk figure. Key works discussed include the Leviathan trilogy, The League of Extraordinary Gentlemen graphic novels, and children's books like The Larklight Trilogy and Her Majesty's Explorer. The document also explores steampunk's expansion into areas like fashion, art, engineering, and online communities.