Grid Calculator
Grid Layout (ctrl+shift+g)
The Grid Layout Javascript enables web-developers to stick to a Grid Layout quickly and simply by including the Grid Layouts Javascript file and simple XHTML code. Currently, the Grid Layouts Javascript relies on jQuery.
Friendly Bit - Web Development Blog
Friendly Bit is a blog by Emil Stenström, a Swedish web developer that occasionally gets ideas of how to improve the internet.
CSS
HTML and CSS Tutorials, References, Articles and News - HTML Dog