Hello Aravinth

You must first understand that hacking is nothing more than reverse engineering code to change was it does, or writing code to change the behaviour of some other code.

So effectively, this is just computer science and engineering. There is no college or university in this world that offers a bachelor’s degree in hacking. When your learn computer engineering and understand it, then you basically already know how to hack.

Hacking is hacking. There is no ethical or unethical hacking. If you want to be a good hacker, report bugs, code solutions. If you want to do bad stuff, hack bank accounts or steal e-mails. Ethical hacking and unethical hacking both have the same approach, and it depends entirely in your actions or what you do with the information hacked. There are just not “good hacking for dummies” or “evil hacking for dummies” books.