Google has launched a second series of training videos and tasks about power searching: http://www.powersearchingwithgoogle.com/
I found the first course useful, so decided give this one a go as well. It runs over the next two weeks, and I’m only as far as watching the introductory videos.
The sample challenge was solved by search guru Dan Russell in a little role play scenario with one of the Google community managers. It was a task about some ruins in San Francisco and consisted of four different questions. Dan solved three very well. The fourth one was about rules in a swimming pool (were you allowed to slide down the slides backwards?) and he didn’t answer that fully, which annoyed me. He saw it as sufficient to show a short film that showed someone breaking the rules (which of course doesn’t mean it was allowed!). A library worker wouldn’t get away with that at the reference desk!!