Where to learn about div's and tableless coding?

Hey

I've been reading through the beginners tutorials on xhtml and css on www.htmldog.com and was kind of disappointed when i realized they don't explain div's and stuff at all there, they barely mentioned the word "div"...
So i need to know guys, where is the best place for a beginner to learn about tableless coding and divs (yeah they are the same, whatever).

Thanks in advance,
Jake