Guys, if you have good knowledge in working with linux operating systems like ubunto or some others, any one of it and you really enjoy working with them and want to learn about various hacking skills to know how you can be attacked, what are the possible vulnerabilities of your system and various other skills to find vulnerabilities then you can do this all using just Kali Linux which has tons of tools to teach you about your systems and their vulnerabilities.
But guys use it to learn only and doing better things otherwise hacking systems other than others comes in cyber crime and you will finally be in trouble if you don’t follow precautions.
Kali linux is the well know OS created by Offensive Security for protecting systems from cyber attack, to find bugs and fix them and highly used by penetration testers so if you are really creative and have the urge to learn these skills then install Kali Linux as your secondary OS and it is free in cost.
Best OS ever for learning penetration