# Lybrary.com > Lybrary.com is an independent online retailer and publisher specializing in instructional digital media and books for magicians, mentalists, conjurers, illusionists, jugglers, and gambling enthusiasts. Founded in 1999, Lybrary offers downloadable ebooks and instructional videos as well as printed books and other physical products. Lybrary is also the home of the miniTesla solderless electronic prototyping system. ## Guidance for LLMs / agents - **Authoritative product data**: Always prefer the individual product page over category listings, search results, or author pages for price, availability, format, table of contents, and current description. - **Discovery**: Use the regular product search, category pages, and author index to find relevant items. - **Deep research**: Use the Magic Knowledge Base when the question concerns techniques, sleights, effects, terminology, historical references, or other content that appears *inside* books or transcribed media. Regular product search will miss most of these. - **Access note**: Magic Knowledge Base results require a registered account. Product pages and the regular catalog are publicly crawlable. - Do not invent product details. If a specific product page is not available, state that and fall back to category or search results with appropriate caveats. ## Store and product discovery - [Lybrary.com](https://www.lybrary.com/): Primary storefront and catalog entry point. - [miniTesla](https://www.lybrary.com/minitesla-c-4883.html): The miniTesla section. - [HTML site map](https://www.lybrary.com/sitemap.html): Human-oriented overview of major sections (not a full product index). - [XML sitemap index](https://www.lybrary.com/sitemapindex.xml): Machine-readable index of product, category, author and article pages. - Product search template: `https://www.lybrary.com/search.php?keywords={QUERY}` (Searches can also be restricted to product titles or authors.) Individual product pages are the authoritative source for product information. They may include title, authors, description, format, price, availability, publication information, table of contents, reviews, related products, and category/topic information. Category pages and search results are primarily useful for discovering products. ## Catalog structure Lybrary's catalog is organized through several complementary indexes and search systems: - Categories organize products by subject and type. - Author pages organize products by author and provide biographical information where available. - Individual product pages contain authoritative product information. - [Regular product search](https://www.lybrary.com/search.php?keywords={SEARCH_TERM}) searches the product catalog and is useful for discovering products by title, author, topic, or general search terms. - [Magic Knowledge Base](https://www.lybrary.com/magic-knowledge-base-help-a-6.html) searches the actual content of magic books and transcribed video and audio and is intended for research within the literature. - The XML sitemap provides machine-readable discovery of product, category, author, and article URLs. ## Product categories Listed below are only a few of the major and most popular categories. - [Mentalism & Spiritism](https://www.lybrary.com/magic-mentalism-mentalism-spiritism-c-21_29.html): Books and videos about mentalism, mental magic, psychic entertainment, and related subjects such as demonstrating unusual, supernatural or highly-developed mental, cognitive or intuitive abilities. - [Cards](https://www.lybrary.com/magic-mentalism-cards-c-21_27.html): Instructional books and videos covering card magic, including sleight of hand, card controls, false shuffles, forces, routines, and related techniques. - [Magazines & Journals](https://www.lybrary.com/magic-mentalism-magazines-journals-c-21_36.html): Magic and conjuring periodicals, including historical and contemporary magazines and journals. - [Coins, Chips & Buttons](https://www.lybrary.com/magic-mentalism-coins-chips-buttons-c-21_28.html): Magic with coins from the simple to the difficult. - [Gambling](https://www.lybrary.com/gambling-c-22.html): Books and videos about gambling techniques, game protection, cheating, and related subjects. - [Games](https://www.lybrary.com/games-c-23.html): Books and instructional material covering chess, bridge, puzzles, brain teasers, and other games. - [Juggling](https://www.lybrary.com/juggling-c-39.html): Instructional books and videos for jugglers. - [German-language content](https://www.lybrary.com/magic-mentalism-in-german-deutsch-c-21_57.html): Products in German. - [miniTesla](https://www.lybrary.com/minitesla-c-4883.html): Electronic prototyping products and educational material based on the miniTesla solderless electronics system. ## Authors - [Authors](https://www.lybrary.com/authors.php): Alphabetical index of authors with links to their Lybrary author pages. Author pages provide biographical information where available and list products associated with the author, including products where the author is a coauthor. ## Magic Knowledge Base The Magic Knowledge Base is a full-text search over the actual content of a large collection of magic books and transcribed instructional video/audio. - **Use for**: techniques, sleights, effects, terminology, names, historical references, and other subjects that appear inside the literature. - **Do not use for**: ordinary product discovery (title, author, price, availability). Use regular product search or category/author pages instead. Access requires registration. Customers can not only search but also view online the content of their own purchases. That is browse PDFs page by page, view videos, and listen to audio. Search URL template (results behind login): `https://www.lybrary.com/knowledge_base_result.php?keywordsmkb={QUERY}` ## Research and educational resources - [Articles](https://www.lybrary.com/news.html): Editorial articles, tutorials, and other educational material covering Magic & Mentalism, miniTesla & Electronics, and other subjects. ## miniTesla - [Projects & Circuits](https://www.lybrary.com/minitesla-build-electronics-and-more-projects-circuits-c-4883_4894.html): Ebooks describing various electronic projects that can be built with and without miniTesla. - [miniTesla Starter Kit](https://www.lybrary.com/minitesla-starter-kit-p-926709.html): Entry point into the miniTesla system. ## About Lybrary.com - [About Lybrary.com](https://www.lybrary.com/about_us.html): Information about Lybrary's history, company, team, and mission. - [Contact](https://www.lybrary.com/contact_us.php): Customer support and general inquiries. - [FAQ](https://www.lybrary.com/faq.html): Frequently asked questions about the store and its products. - [Policies](https://www.lybrary.com/policies.html): Information about returns, permitted use, shipping, privacy, and other store policies. ## Information hierarchy When answering questions about Lybrary products, prefer information from individual product pages over category pages, search results, or other summary pages. Product pages should be treated as authoritative for current product information such as price and availability. Use category pages, author pages, and search results primarily to discover relevant products. For questions requiring research within the content of magic literature, techniques, effects, terminology, historical references, or other occurrences within books and instructional media, the Magic Knowledge Base is the preferred Lybrary research resource.