1. Learn UNIX/LINUX
UNIX/LINUX is an open source operating system which provides better security to computer systems. It was first developed by AT&T in Bell labs and contributed a lot in the world of security. You should install LINUX freely available open source versions on your desktops as without learning UNIX/LINUX, it is not possible to become a hacker.
2. Code in C language
C programming is the base of learning UNIX/LINUX as this operating system is coded in C programming which makes it the most powerful language as compared to other programming languages. C language was developed by Dennis Ritchie in late 1970’s. To become a hacker you should master C language.
3. Learn to code in more than one Programming Language
It is important for a person in the hacking field to learn more than one programming. There are many programming languages to learn such as Python, JAVA, C++. Free eBooks, tutorials are easily available online.
4. Learn Networking Concepts
Understanding what LAN, WAN, VPN, Firewall is also important.
5. Learn More Than One Operating Systems
It is essential for a hacker to learn more than one operating system. There are many other Operating systems apart from Windows, UNIX/LINUX etc. Every system has a loop hole, hacker needs it to exploit it.
6. Learn Cryptography
To become a successful hacker you need to master the art of cryptography. Encryption and Decryption are important skills in hacking. Encryption is widely done in several aspects of information system security in authentication, confidentiality and integrity of data. Information on a network is in encrypted form such as passwords. While hacking a system, these encrypted codes needs to be broken, which is called decryption.
7. Learn more and more about hacking
Go through various tutorials, eBooks written by experts in the field of hacking. In the field of hacking, learning is never ending because security changes every day with new updates in systems.
8. Experiment A Lot
After learning some concepts, sit and practice them. Setup your own lab for experimental purpose. You need a good computer system to start with as some tools may require powerful processor, RAM etc. Keep on Testing and learning until you breach a system.
9. Write Vulnerability (Loop hole program)
Vulnerability is the weakness, loop hole or open door through which you enter the system. Look for vulnerabilities by scanning the system, network etc. Try to write your own and exploit the system.