It's embarrassing to say I even attempted to read this alleged book. It's merely a nearly-unreadable, poorly formatted list of books that the author categorized by space opera or planetary romance, the era they were written in, the type of book (novel, short story, etc.) and a rating. The ratings vary from book to book, even on the same book. Several are duplicated one or more times, and each version manages to have a different rating. Also, nearly a hundred pages of the book are taken up by listing the author's own work, these "guides". This isn't worth the price; or even the cost of charging up your Kindle after draining the battery while flipping these incessantly incoherent pages.