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Question for #Linux #beginners and educators: What are some good intro to Linux books?

(Background: I'm organizing an #installfest at the public library and the Linux books on the shelf are from 2009-2012. I'd like to be able to recommend some up-to-date intro reading. The installfest isn't until Aug. 30 so we have time to get some books ordered and/or into the library purchase request system)