The advantage of the videos like Karl's is that they give a very good overview of what is available
even if you won't be using most of it in the near future.
There'd be no way of figuring that out by googling, and you'd lose quite a bit of hair just poking around in X2.
I'm positive that someone who's watched such a video will end up using more of X2 than someone who hasn't.
Unless of course you're a long time Sonar user, which isn't my case.