"The Rise & Fall of the Dinosaurs" by Steve Brusatte is a great book that describes chronologically the beginning of dinosaurs through their end - by means of a young scientist telling about his various digs in his own (non-chronologically) experience. One thing I found important and unique about it was that it put the dinosaurs in the context of their geological environment.

It's relatively up to date, easily accessible, teaches quite a bit, and is fun.

Birds are dinosaurs...

Not a book, but I enjoyed this talk from The Royal Institute:

https://m.youtube.com/watch?v=f-jD7kQvyPs

You're in luck. We have 2 such books today. Other than "Rise & Fall of Dinosaurs" mentioned, "Dinosaurs Rediscovered: The Scientific Revolution in Paleontology" is a good one too.

I just finished reading the first couple of volumes of Larry Gonick's Cartoon History of the Universe and have learned a lot about dinosaurs from that.

Not a book, but there is also the excellent “PBS Eons” series on YouTube that has a lot of videos on dinosaurs.