Thank you!
As I said I'm a total newbie when it comes to videos so I need a bit more details and guidance to get started. For the NLE, I will work with and try to learn FCP and Resolve.
I keep using the analogy of me taking a RAW photo of the scene and then immediately taking an identical picture with the same settings and a white balance card. Then in post, I used the develop module in Adobe Lightroom to correct the white balance.
I know shooting videos is different. If I were to do something similar with videos, and you seem to suggest I can do the same thing with videos, then how long does the second clip with the white balance card have to be so that I can use it to correct the white balance in the first clip? Let's say I shoot a one-minute clip of an interview conducted in an office. Then shoot a one or two-second clip with a white balance card and use Resolve's eye dropper tool?