How is this trending on Show HN? The text is unreadable. The letters lock, unlock and rotate. Can there be a more user hostile way of offering a free preview?
From the Show HN guidelines:
> If your work isn't ready for people to try out yet, please don't do a Show HN.
There is clearly no way to try out this book. The "Show HN:" prefix should be removed from the title so that this post can belong to the list of regular posts.