Just read the first one- it reads more like a novel than a textbook IMHO, though I may be biased- I have always been fascinated by networks and when I was coming of age this was the "high tech" of the time- I used to read RFCs for fun (I highly recommend this as well if you want to dig a little deeper- Jon Postel's are great reads).

This is one of the best written textbooks, if not the best, I have ever read.