As a longtime geek myself, I'll admit to spending quite a bit of time and effort from the early 90's onward to teach myself the basics of computers, networking and IS security. The following diagram represents a moment in time of my home network roughly 20 years ago. It's been severely downscaled since then while still being upgraded significantly, if you know what I mean. ;)
https://scontent-ort2-1.xx.fbcdn.net...6e&oe=61749460