I like his rating ladder videos
IM John Bartholomew Chess Videos for Novice

John is my favourite master on youtube. Very good explanations and a very pleasant way about him makes it a pleasure to watch and learn from him. He'd be the first one I'd recommend.
I have watchged all of Johns videos in just less than a year - and other streamers too. Improved my chess a lot.

jambyvedar - Thanks so much for bringing these to our attention. I watched the first two and can't want to see the next three. Even if you're not a novice, it's very instructive to watch an IM play a live game while focusing on one of the five themes. Of course, he adds in a lot of insightful and educational extras of why he makes moves and the overall situation.
I also like Bartholomew's nine-part "Chess Cognition" series on YouTube, each one involving the analysis of a game and each part has a link to the pgn file for the game. The first one is here:
https://www.youtube.com/watch?v=K1rfDENvihQ

Yep. John's videos are great. The ones he does on tactics training are good too. Another channel is thechesswebsite.com on YouTube. Very straight forward style, easy to understand, and he he was first or close to first to post games from the World Chess Championship. He also has a good series on openings, middle game tactics and endgame fundamentals.
These are instructive videos that will help novice players.
Chess Fundamentals #1: Undefended Pieces
https://www.youtube.com/watch?v=Ao9iOeK_jvU
Chess Fundamentals #2: Coordination
https://www.youtube.com/watch?v=TWJ6751RRis
Chess Fundamentals #3: Typical Mistakes
https://www.youtube.com/watch?v=I5o2d9slUCM
Chess Fundamentals #4: Pawn Play
https://www.youtube.com/watch?v=h-JGqEiNs-I
Chess Fundamentals #5: Trades
https://www.youtube.com/watch?v=8kdjSqNcViw