well eversince i got interested in web desighn i've looked for tutorials but they where not that helpfull and uderstanderble but there where two web sites that i liked
1. my favorite one was htmldog it had tutorials on HTML, CSS, and a little bit of javascript. they where very comprehenseve . and i read through all of them, understoode them, in about less than a week. also has full references for HTML, and CSS tags.
2.since html dog did not provide realy good javascript tutorial i looked to w3school for that
while it wasnt very understandable too me, maybe it was just the subject. but it offers tutorials on a lot more sujects like:HTML, XHTML, CSS, TCP/IP, XML, XSL, XSLT, XSL-FO, XPath, XQuery, XLink, XPointer, DTD, Schema, XML DOM, XForms, SOAP, WSDL, RDF, RSS, WAP, Web Services, JavaScript, HTML DOM, DHTML, VBScript, AJAX, AppML, E4X, WMLScript, SQL, ASP, ADO, PHP
and it offers full references on all these subject