| Link | Description |
|---|---|
| W3CSchools.com | Whether you are looking to learn a web programming language or are looking for reference material about a specific web language, start here. Major sections on HTML, CSS, XML, Javascript, ASP, PHP and SQL. |
| W3.org | The World Wide Web Consortium is responsible for developing web standards. The site is quite dry and some of the standards are particularly heavy, but it should be the ultimate reference site for current international web standards. |
| reCaptcha | reCaptcha is a validation system which helps to digitise old books! I have used it for the contact form on this site and all is working well so far. It uses a simple private/public key system for validating the web site. There us a fairly simple PHP example on the reCaptcha web site if you want to use it yourself. |