If you have someone to evacuate the system after installation, great. If not have it done by the people who have the equipment. The compressor change out in its self can be difficult when working with the clutch, again special tools required. Otherwise, disconnect the belt, unplug the electrical connection to the clutch, remove the freon lines, and unbolt the compressor. To repeat myself, its not for the home mechanic to do. After assembly is done and before, JUST ADDING FREON, the system has to be evacuated into a vacuum state and leave is set for a short period of time to remove all moisture from the system (humidity). Hope this answers your question. Welcome to the Forum and your entries are right on tract.
Good old Bill