This isn't really a journey, per se. It's a collection of sites dealing with cascading style sheets.

Pure CSS tooltips: pop-up tooltips without javascript

Fogcreek links: from a Fogcreek discussion list

css-discuss wiki: tips, tricks, and howtos

evolt: css and more

css: section of A List Apart

css tutorial: from echoecho.com

mako4css:

hover: css menu

Listamatic: styling lists, and other things

CSS Depot: layouts, links