Phoenix Network Forums

www.w3schools.com

There's tutorials for html, xhtml, css, php, java, xml and much more! It includes try-yourself editor, where you can see the code in left side, and site in the right side, and you can modify the code, and see what changes. If you have problems, you should check this out I recommend.

www.w3schools.com is one of the best sites learning html, css, and a lot of other things. I learned javascript pretty well there.

W3Schools is a great site, but I like learning programming by looking through sample code (like the php website's sample code).

W3School is a great ref site. i use it for HTML stuff usually

you can actually look at their stats for usage to see what types of browsers are popular as well.. (a little tilted toward developers, and savy people.. )

http://www.w3schools.com/browsers/browsers_stats.asp

Yeah for FIREFOX!

For php the place to be is http://www.php.net/ , thats obvious.
But sometimes google just comes out best.

and if you start with php i don't advise http://www.w3schools.com at all.
It can confuse people that start with php in some cases.

Actually I think that anybody that is learning php, better have at least a strong html/css knowledge.. much less any of the other umteen-million markups..