It's very old school with so much content on the web that you may be sipping from the fire hose with the usual overload.
But with your usual camera and video composite output you connect it up on your bench first then with that working move to your longer cables. At some point you need an video splitter or booster. I never plan ahead for that since many setups don't need it and the folk I work with like how that rolls. (lower costs.)
For those that must plan to the nTH detail, you go ahead with the amplifiers and splitters and let them pay.