HTML
HTML official homepage http://www.w3.org/MarkUp/
An Interactive Tutorial for HTML http://www.davesite.com/webstation/html/
An HTML Validator http://www.htmlhelp.org/tools/validator/
JAVA, Javascript
www.JAVA.sun.com http://www.java.sun.com
Javascript Source http://javascript.internet.com/
DHTML, Cascading Style Sheet (CSS)
DHTML Lab http://www.webreference.com/dhtml/
Microsoft CSS Gallery http://www.microsoft.com/typography/css/gallery/entrance.htm
Web Server
Apache Web Site http://www.apache.org/
Java Web Server from Sun Micro http://www.sun.com/software/jwebserver/index.html
Java Servlets, JSP
Apache JServ homepage http://java.apache.org/jserv/index.html
Sun Servlet Page http://java.sun.com/products/servlet/
Sun JSP Page http://java.sun.com/products/jsp/
MySQL
MySQL home page http://www.mysql.com
JDBC Driver for MySQL http://www.mysql.com/downloads/api-jdbc.html
OTHER
Text Book official Site http://www.deitel.com/
Want to find anything else? Try Google search engine below:
Google
Google
Google