Sams Teach Yourself Web Publishing with HTML and CSS in One Hour a Day (5th Edition)

QuirksMode

http://www.quirksmode.org/

JavaScript Source

http://javascript.internet.com/

Sun's Java home page

http://www.javasoft.com/

JavaScript Reference

http://javascript-reference.info

Douglas Crockford's Wrrrld Wide Web

http://www.crockford.com/

script.aculo.us

http://script.aculo.us/

Dynamic Drive

http://www.dynamicdrive.com/

HotScripts.com

http://www.hotscripts.com/