Here are links to several chess videos on YouTube that I have been watching to improve my game. Please feel free to email videos you've been watching and if I think they're helpful I'll add them to the list! 

• 2 Minute Chess Strategy: The Center 
  This Strategy will make your game more powerful immediately! This is an introduction to this concept. When pieces are developed to control the center you can attack anywhere much faster. If you follow this, you are well on your way to become a strong chess player! 
• Chess Strategy: The Basics
  Another video about the importance of central control.  
• Popular Beginner Openings - WGM Tatev Abrahamyan (2015.06.16).
  Woman Grandmaster Tatev Abrahamyan substitute teaches Beginnner Breakdown. Tatev starts out reviewing a game from a recent blitz tournament, but she turns it into a lecture on beginner openings. What is in style for the sub-1400 crowd? The Italian Game, Four Knights Game, Fried Liver, and more are covered.
• Strategic Ideas for Beginners - WGM Jennifer Shahade (2013.02.07)
  Chess WGM Jennifer Shahade presents a lecutre about tactics and strategic ideas for beginner/intermediate players at the Chess Club and Scholastic Center of St. Louis.  
• Games that End in Eight Moves - Beginner Breakdown (2014.09.24)
  Mike Kummer shows some games with unexpected twists and turns between Club beginners. Laugh at their errors, while learning what not to do. Also, what happens when two 1000 rated players engage in the Smith-Morra? Anything could happen!
  (I'm not sure how much I like this video, but he does have some nuggests of wisdom there, like "I'm not attacking your piece, I'm attacking the square." -Mr. C)
• Chess Lesson: The Most Common Mistake in Chess - Grandmaster Smirnov
  Notes by Grandmaster Igor Smirnov: As a chess teacher, I analyse my pupils' games regularly. Of course, I analyse games of other players as well. That's why I can tell you that there are a few most common mistakes, which most of players make often. So in this lesson, I am going to tell what the most common mistake is. (To Take is a Mistake)
• Universal Chess Opening against d4
  How to play against d4?, A system against the white d4, Chess openings for Black, Chess traps for Black, Positional Black Opening against d4, Tricks to win fast for Black, Chess trap, Chess tricks, Chess Opening, Attacking Chess, Aggressive Black Opening, chess opening tricks & traps,
  (I have been using this response to great affect against d4 and c4 openings. - Mr. C.)