This is one of my favorite books. If you enjoy it you should also read
The Cuckoo's Egg by Cliff Stole, and
Do It! by Jerry Rubin (this last one only a little related to the hacker subculture since it happens just before it existed but there are strong links between the Yippie movement and the phreaker scene which is the predecessor of the hacker scene).
I think that those three are my most favorite books of all time.