IMO the manuals are nice but very incomplete – for instance, the only mention of cabin pressure controls is pointing out where in the cockpit they are. There’s no information about how they should be set or what they do when changed, so if you have a problem with cabin pressure in-flight (as I did) it’s unclear what to do about it from the manual.
Do you know of a tutorial video that specifically speaks to the cabin pressure (the thing I looked for in the manual when I had a problem and did not find it)?