I second not recommending any books.

What I would recommend is getting an old computer, thst you can experiment on. Run linux on it, make it into a router, convert it into a NAS, run your own node on it...

Pretty much the first thing you'll have to learn is how to google for stuff when you get stuck.

And mainly, don't get intimidated by foreign concepts and not understanding a lot at first. The beauty in CS is that everything can be broken down into really simple, easy to grasp concepts and a lot can be tried at home at little to no cost and if you are persistent enough, you can master anything in this field just given enough time and effort.