These are a list of links that I find useful:

CSS

www.glish.com/css
www.westciv.com/index.html
css.maxdesign.com.au/index.htm
www.csszengarden.com
www.cssvault.com
www.topxml.com/css/default.asp

Spanish

www.lingolex.com
www.bbc.co.uk/languages/spanish/
www.trentu.ca/spanish/masarriba/
www.kn.pacbell.com/wired/espanol/
www.studyspanish.com
Juego
La hora
Siete Dias
Los meses del ano
La hora - Media hora