Learning CSS Layout

Some Good Links to get your started

Css Basics.com - Very good site to start learning CSS from.

Developing with Web Standards - Overview of how HTML/Standards/CSS all fit together.

Using CSS Selectors

Float Tutorial Good introduction to the float property, which is the foundation of most layouts

Coloured Boxes Example technique for building site layouts.

An Overview of Current CSS Layout Techniques

Layout Sites

Layout Gala a collection of 40 CSS layouts based on the same markup and ready for download!

glish.com CSS Layout techniques a good resource for learning some basic commonly-used layouts.