This question is a book of a different cover. It probably would have been easier to ask over at Facebook but I am not a member there so I tried to use the forum board that best fit.
This particular QuickSheet (in the subject) was originally printed in 2010 (First Edition) and a Second Edition was printed in 2017 per author's Amazon page and WorldCat.
Recently one genealogy online bookseller announced a new stock of this QuickGuide "Second Edition Revised" (but is using the ISBN of the 2010 edition) and another online bookseller also mentions Second Edition Revised (using ISBN of 2017 edition) with both giving a published date of 2019 but neither point out what makes this "Revised" -- is it just a new printing run because everyone ran out, is it just minor typos corrected; or has there been revision to the substance of the QuickGuide itself either major or minor changes?
Knowing this would help me advise a genealogy society member who uses the library's copy of EE where to best spend the money -- the Second Edition Revised at either online bookseller both of whom have $5.50 shipping rate for first item OR the kindle version (no shipping) of the Second Edition printed in 2017. There are pros/cons to both new versus prior and physical versus digital but those are separate issues to what is the difference between this QuickGuide's Second Edition and Second Edition, Revised.
Please Advise. Thank you.