Power steering pump location and replacement instructions needed

I took car in they fixed the return hose I believe it was from the cooler to the pump but now it’s the pump also. They want another $300.00. So I’m going to pull 1 or buy 1 and do it. Where is it located and can you tell me how to do the process. YouTube Videos are not always accurate and pause and play I just want simple step by step. Maybe a picture or two. Thanks in advance.