Security Basics: starting

[Ale <elcorreodeale () gmail com>]

  Hi! this is my first mail in this list.
Sorry for begin to "noob" but i want to start reading and learning
about securty holes, exploits, how to fix if or take advantage of
then...well anything about web servers, proxy's, networks, etc..and i
don't know where start. Can someone please recommend me some good
text, book or web page?

Many thanks, cheers!