Plenty of books out there waiting readers, but u have to buy something meet your level of knowledge, So ur question ought to be laid out like: I know blah, blah, blah in computing and i have certificates in blah, blah, blah and i want to know blah, blah, blah in blah, blah, blah.
It is not really rational to buy some books like "Hacking Exposed" and u don't have any foundation upon which you built ur upcoming level of knowledge!.

Cheers,