Is there a video explaining the features of DaVinci Resolve 17?
There is also a video covering the entire DaVinci Resolve 17 guidebook produced by Blackmagic Design from start to finish.
If you would like to learn the whole thing, you may take a look here. After all, it's long, so I haven't finished the last chapter yet, but I think it explains in great detail how to edit the cut and edit pages in particular.
Blackmagic Design's videos are explained very carefully, but they are basically explanations along the flow of video editing, so you may not be able to get a pinpoint answer to what you want to know.
DaVinci Resolve users around the world cite many instructional videos. Why don't you search and check it out?