For the price of your email address and a few other pieces of personal information, you can download
free the O'Reilly Media book
Graph Databases. This is the second edition (published June 2015!). The authors of the book are Ian Robinson, Jim Webber, and Emil Eifrem.
O'Reilly Media is a publisher of technical computer books, and maybe books of other non-fiction subgenres.
To save you the trouble of going to the signup webpage and then possibly finding out that the book is not for you, here is a short blurb:
Discover how graph databases can help you manage and query highly connected data.
With this practical book, you’ll learn how to design and implement a graph database that brings the power of graphs to bear on a broad range of problem domains. Whether you want to speed up your response to user queries or build a database that can adapt as your business evolves, this book shows you how to apply the schema-free graph model to real-world problems.
Curiosity got the better of me, and I had to go to
O'Reilly's website to find out what the retail price of this ebook is. It is $33.99!
I did not download the book, myself (due a lack of interest on my part in computer books on this level), but I'm "sure" that the format of the ebook will be pdf, although I noticed that if you
buy the ebook on
O'Reilly's website, you can get any of the flavors (ePub, mobi, pdf).
Here is
the place to get it.