English Opening is a chess opening with the ECO code A10. It goes 1. c4. White opens with 1. c4 (the English move). After 1 move it is Black to move. The lesson on the board explains every move of the line and lets you play it yourself; it is free.
In chessGM's opening book this position continues with 1... e5, 1... Nf6, 1... c6, 1... c5, 1... e6.
White starts with 1.c4, controlling d5 from the side. It is flexible and often leads to slow, strategic games.
chessGM has a full course for this line: open the English Opening course lesson.