First off... Hi! Welcome to TRS.
I don't think you're going to find a video of a 5.0swap. try reading a bunch of 5.0 swap threads in that part of our forum. You may find some of your answers there.
Making the gauge cluster work might take some research. Temperature and oil pressure might be easy. Speedometer and odometer might depend on what transmission you are using. Please open a thread in the engine swaps area and give complete info about your truck - year, original engine, original transmission, etc and info about the equipment you are putting in. What year 5.0? From what vehicle? What transmission? You are using the ECU from the donor vehicle, right? With lots of info, people here will be able to steer you in the right direction. This is a common swap.