Good online resource for learning about classic ( advanced ) datastructures ( OO )

[Thomas Weholt]

Hi,

Does anybody know of any good online resource for basic classical
datastructures, preferrably aimed at Python, or language independant? 
It should be pretty step by step, basic, yet complete.

I want to learn more about how stuff like how different trees (
Black-Red, 1-2-3, AWL etc. ) , graphs are constructed, where and when
they're used etc.

I think a similar concept to what I'm after was laid out in the
"Datastructures and Algorithms in Java", but I cannot seem to get my
hands on that book. ( The last time I read it I had problems applying
the stuff to python too. But that's a long time ago so I might be more
productive now. Hopefully ;-> )

My main goal is that I want to learn how to get datastructures to
work, and why they work, when and how to use them. The foundation,
system behind the design.

( Do I make any sense at all ?? )

Thomas