I'd start by checking out something like CompTIA's A+ materials, if you want to understand the hardware components. Same for networking (Net+). They'll give you

I'd start by checking out something like CompTIA's A+ materials, if you want to understand the hardware components. Same for networking (Net+). They'll give you a basic understanding as to what's going on--they're not a deep dive by any means. But they may prove useful. You may also take a look at something like hackr.io, which has a ton of resources.