i love computers, but i m confused what should i do to earn. i saw testing and i think i want to go this path. pls help me understand

how much a person can earn, min to max, in this line

what r special requirements and where should i start, what courses do i have to do, does companies require me to have degrees or diplomas etc.

main thing is

what to do step by step and how much time it may take. i m 28, i m unemployed. i m also considering cyber security (white hat hacking).

i have sharp mind and i want to earn fast.

which companies to join. at first i want to do partime.