John Bartholomew is also a co-founder of https://www.chessable.com/courses/ https://www.chessable.com/courses/ which complements his YouTube and Twitch videos.

John Bartholomew is also a co-founder of https://www.chessable.com/courses/ https://www.chessable.com/courses/ which complements his YouTube and Twitch videos. Chessable has interactive online lessons. My present preference is to spend my time watching his videos, then head over to chess.com for my chess fix. If I got serious about chess, I guess I would use Chessable to improve.