If you want to learn the London system chess then you can enroll with the best chess courses of Study Chess Pro. The London System is a chess opening that is played with white pieces. Usually, it entails the following moves: 1.d4, 2.Nf3, 3.Bf4, then e3, Bd3, and/or Nbd2, before playing for a pawn break with the moves: c4 or f4. The main idea behind the London System is to control the central squares and develop pieces quickly while avoiding some of the more complex and theory-heavy lines that can arise from other openings.