linux – How to step into Info-Sec as a newb?

I’m a complete newb. I know literally nothing more than a consumer when it comes to everything. I’m in the better half of the population that makes the most out of their products. But when it comes to the technical aspect, I’m quite simply a newb. I wish to change that and start out a hobby in Info-Sec. The only problem is I have no clue so as to what pre-requisite knowledge to step into the field to how to start it. What skills are required? If anyone can give me a rough/systematic roadmap, it’d be highly appreciated.