Since midsummer I've been watching the "STL on STL" series accumulate on Channel 9. The lectures appeared as "part 1 of n", "part 2 of n" and so on until, in the bleak midwinter, part 10 of 10 appeared, so they must be done. Here are some links to them all:
There really isn't any universe in which the material this series covers can be called Introductory. When Stephan has finished introducing you to the STL, you will know an awful lot. And in this century, knowing the STL is a vital part of being a C++ developer. Many developers are scared of it: they think it's difficult and complicated. And to be honest, it can be. There's an awful lot going on and there is a lot to learn. Watching these videos, you can see how much Stephan LIKES this material, likes this library, and he's clearly not scared of it or trying to impress you with how difficult it is. He wants you to know all this. And if you follow along (and even do the homework!) you will catapult yourself forward in your STL knowledge and abilities. Take the time to do it, you won't regret it.