Matt did some great cushvlogs where he discussed the book Cloudsplitter in sections, I'd recommend those

A fictional memoir of John Brown from the point of view of his son. According to Matt, very useful for understanding the kind of pre-modern mentality that gave John Brown the resolve to fight for his ideals, which doesn't really exist anymore on the American left.

here's one from that period of vlogs but I don't know if you should go backward or forward from here:

TAKEN 4: RETURNED | CushVlog 09.03.20 | Chapo Trap House