Grandmaster Igor Smirnov
Anyone who is looking to improve their chess and is studying books and doing tactical exercises should read this Article. I am telling you that it's not the best way. Search for Remote Chess Academy on YouTube and find out the best way to improve your chess. All his teaching methods have had great results such as ratings increasing by several hundred. I'm not saying that chess mentor or chess.com videos are ineffective but use them together with Igor Smirnov's methods and your rating will soar. I've discovered it only a week or two ago and already I've won a few games against players with a rating around 200 points higher than mine.