The book that features the world of Ravnica, Guilds of Ravnica, and the guilds of Gruul, Duodenum, Norva, and Kjeelgtag are called the Guildmasters Guide to Ravnica PDF. I really like this book, even though it is a bit pricey. I am not sure why they decided to put the price on the book, but hey, it is not hard selling. The book is well written, informative, and has plenty of images to show you what the guilds of Ravnica are all about. It is worth the price.
The book is only 401 pages long, but I was able to easily read through most of it in one sitting and I probably will be able to do that with a few days leveling up my characters. If you are going to buy the book, you should know that you are getting a lot more than what you are paying for. You are going to get an entire expansion with this book and if you do not play in a guild or if you do not play on a server you will not know what you are missing. What a great deal. You get to read the Guildmasters Guide to Ravnica PDF, watch the videos for the zones and guilds, and you also get a guild portal where you can see other players’ guild profiles and mine as well.
Overall I am very happy with the purchase, and the information I have received from the book has made me a better player overall. While the price might make you think twice about buying this book, I know now that I am going to purchase this book again soon, and not wait to fall in line behind everyone else because I am too lazy to read anymore. For the price that I paid for it I am glad that I decided to buy this book, read through it in one sitting, and use the information to help my game.