guitars

Hi all, I'm in the beginning steps of learning guitar. hands are very broken in, chords sound good, I know a few from 1st to 5th but I wanted a better understand of the progressions.

if it better to follow c, d , e, e# etc.. or c, g, a? or would it depend on the music? I'm focusing heavy on bluegrass. Doc Watson is a big focus for my end style, or Billy strings.

i currently practice/play about 4 hours a day 7 days a week. (a lot I know) my focus is flat picking and finger style mostly rather then traditional strumming.

does any.one have and good guides or books I should read up on for how to do good proper cord progressions? even a simple info graphic that is easily understandable for a beginner?

I'm focusing mostly right now on chord runs. C is memorized and working on getting some others that can meld with the c run.