How to get comfortable in linux as an ex-windows user?

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http://unix.stackexchange.com – I've been using linux full time for about 8 years. Now and then I help someone else migrate from windows to linux. Because I don't often use windows, I often find myself forgetting some of the differences between the operating systems. I would like a guide that I can give to such users, to help them get more comfortable with using linux. The guide should include things like the drive mounting systems (C:\bar\ vs. /foo/bar/), and software installation. There are lots of guides out there called "migrating/moving from windows to linux" or similar, but nearly all of them seem to be full of linux (HowTos)