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When looking for updates it’s helpful to know which printing you’re working from, as minor corrections are made every time the book goes through another print run. Right now, the book is on its second printing. You can see which printing you have by looking on the copyright page, which is on the back of the second page in the physical book.

If you find an error in the book or can’t get something to work, please let me know! You can reach me through email at, on Mastodon at or on Twitter at @ehmatthes.