[webwanderings]

Looking at the TOC, I think the one by Loyola University's associate professor, seems like a better introduction.

[bb0wn]

I haven't read the linked book, so I can't comment on which is a better introduction.

I will say that having read the Tannenbaum book, it is a very thorough, bottom-up survey, and you will certainly know quite a lot about computer networking after reading it.