1) Deputy Chief Irving is a much more sympathetic character in the TV show than he was in the books.
2) Not sure because it's been a while since I read the books, but it would appear that the shows were made from Echo Park and Trunk Music. What I don't know is if they rolled other books in as sideline stories.
So figure I got 1,000 minutes of entertainment out of the deal, that makes a decent start at cutting into the $99 Amazon Prime price that I paid. I don't care about the free two day shipping since I almost always wait until I have $50 worth of stuff to order and get free shipping anyway so that doesn't figure in.