I would be wary because you never know what you're going to get.
Seriously, the best way to learn Photoshop is just to play around with the different functions and tools. Find tutorials online, etc... I've been working with it for 5+ years and just learned some new things at a seminar I went to not that long ago.
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It's gonna be a hootenanny.
Or maybe a jamboree.
Or possibly even a shindig or lollapalooza.
Perhaps it'll be a hootshinpaloozaree. I don't know.