AFTER a certain amount of messing about, Finish Your Book is now available on paper here: https://www.amazon.com/dp/1522043837 — cheaper than a $6 cheeseburger, and better for you, too. (Disclaimer: please don’t eat the book; I suspect the inks and stuff are not exactly FDA approved.)
And of course the non-dead-tree version is available from all good eBook vendors. See https://petefordwriter.com/books/finish-your-book for details.