Lynx help files (usually in your local directories):

• Lynx Users Guide — complete account of all Lynx features
• Key-stroke Commands — quick outline of what various keys do
• Line Editor — when entering URLs etc
• Supported URLs — how Lynx handles various types of URL
• About Lynx — credits, copyright etc
• About Lynx-Dev — the developers & how to contact them

Other sources of Lynx help:

• lynx.cfg options — a reference for advanced configurations
• lynx documentation — supplementary documentation
• Lynx Help for Beginners — quick help on many common problems
• Blynx — Speech-Friendly Help for the visually impaired

World Wide Web Consortium documents:

• HTML — 5.1 — 4.0 — 3.2 — 3.0 — 2.0
• HTTP — 1.1 — 1.0
• XHTML — 1.0
• Web Naming & Addressing Overview: URIs, URLs etc
• HTML Internationalization
• WWW Consortium: home page

Help with HTML:

• HTML 4.0 Reference
• W3Schools
• HTML Goodies
• HTML Code Tutorial
• HTML Cheat Sheet – A Simple Guide to HTML

HTML validation services:

• W3C HTML Validation Service
• WDG HTML Validator

Other browsing software:

• GNU wget — powerful & flexible non-interactive downloader
• Pavuk — powerful & an even more-featured downloader
• cURL — non-interactive downloader which supports HTTPS
• snarf — small simple 1-file non-interactive downloader

Historical interest

• NCSA Mosaic

Search engines:

• Ask.com
• Baidu (Chinese)
• Bing
• Dogpile
• goo (Japanese)
• Google
• Hakia
• IceRocket
• Indeed
• Lexxe
• Rambler (Russian)
• Search.com
• Teoma
• WebCrawler
• Yahoo!