Learn about the open-source operating system Linux/Unix, a highly secure system popular among hackers.
Start with languages like C that lay a foundation for UNIX/LINUX. Post that, shift to other similar languages.
Know how to be anonymous online. Some available tools, such as Anonsurf and Proxychains, can help maintain your online identity.
Understand different networking concepts, including the use of Nmap and Wireshark. This is where knowledge of protocols and network structures is essential.
Learn to use tools such as Tor to explore unfamiliar territories of the internet. Despite being a center for illicit operations, it has legitimate purposes.
Acquire skills in encryption and decryption. This ability is critical in decoding data on networks that are coded.
Dig up the hacking basics like SQL and penetration testing. Keep abreast of current security trends and new tools.