Here is a link to a good YouTube video on how a pressurized water reactor (PWR) works. The Westinghouse AP1000 (Vogtle 3 & 4) is modeled with some pretty good graphics, showing the details of several of the plant’s systems.
The guy who made the video doesn’t get every detail exactly right, but overall, I think it is a good effort. Toward the end, when he shows some of the components in the turbine plant, he took a few shortcuts, making the systems look somewhat simpler than they really are. But most of the graphics inside the reactor coolant system and reactor containment building are excellent. If you have some spare time (about 47 minutes), it could be educational.
_ Pete