A few days ago I recommended you some videos related to web design and development. Being more and more interested in this subject I decided to look further and I found the two amazing videos (below) related to CSS. The author - Douglas Bowman from Stopdesign - managed to make them both inspirational and informative at the same time and if you are interested in this subject you will not waste time watching them. And even if you are not interested these can change what you think about designing a website.
No More Tables: CSS Layout Techniques
Creating Beautiful Interfaces With CSS