This book teaches probability theory in a nonstandard way, compared to most modern first-year graduate courses in probability theory. I learned a lot from this book.
However, the book doesn't seem to be ready for publication; some of the exercises are wrong (such as ____ and ____ (TO UPDATE LATER)), there were very few exercises outside of Chapters 1, 7 and 8 (for example, none at all in Chapters 9 (Process Approximation and Metrics) and 10 (The Ergodic Decomposition)) and there were many, many typos (on the order of a couple per page). I'm concerned about the exercise selection because in my opinion, exercises are extremely important in learning math.