"viewed: 987" and no one even replied a "hello."
Most books and college classes and on-line courses on security and computer security and hacking and variations of hacking (as they relate to computers and computer systems), I have found to be much worse than a waste of time.
Do a Google search on +"security" +"bytes.com" and read what has been said here, all of it by everyone that has posted here since this site began. Then read all of what those posters have said in their other posts. This, as I see it, is an industrial site frequented by people that actually make a living from what they talk about. You should study here first.
Then, after you have read all of that, do a Google search on just +"security". But, it has been my experience that commonly the actual best results on Google for this type of search are at least 10 or maybe 50 listings from the top.
You, YOU, just you, have to study. You HAVE TO study.