Brake a Safedisc 1.5 protection

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Thank you.
I would like to make you a question.
I have several games craked. I'm very good as a computer user, not as a programmer. I'm very curious and like to learn new tricks.
Is it possible to someone like, to learn to crack a game? how can i do that? How can i start? I know that there are several kind of protection (safedisc, securerom), and that every protection has is way o protect.