I'm the author of the book "Implementing SSL" (https://books.google.com/books?id=LfsC03f8oGsC&printsec=fron..., which covers a lot of the same ground as the link) and consider myself a crypto person - although I haven't had a chance to read every word and check through it with a fine tooth comb, based on what I've had a chance to review, it appears very accurate and very well laid out.