I'm 20 years old and have no knowledge in the world of information security! I'm currently studying engineering and I've recently found what work I want to do (pentesting or a career in fields like this). So reading various sites and forums, I've decided to start to study the basics of the communication service TCP/IP.
1. Is this the right or the most convenient beginning in this field?
I know the basic things of languages like c/c++ and I'm currently studying java.
2. What book I should buy?
Reading online I found numerous books about TCP/IP, currently I'm looking to choose this :
TCP/IP Illustrated: The Protocols v. 1
but I don't know what is the most appropriate for me. (I noted that most books are "old" (1994) it's that normal? and why?)
3. Am I late to choose a career in this field?