Here are some important links, so wanted to keep them accessible in a nice, clean and friendly format.

Google script list...

http://code.google.com/apis/libraries/devguide.html

W3C Validation for HTML ...

http://validator.w3.org/

W3C Validation for CSS ...

http://jigsaw.w3.org/css-validator/

CSS3 Generator ...

http://css3generator.com

Google Web Fonts ...

www.google.com/webfonts