https://www.chess.com/blog/TheMonkPlayingChess/the-first-step
This can help you , many players have improved by this . I think this is perfect guide to reach 1000 elo ( few have reached , others on the way ) . This is precise to the point and effective , if it works for you do let me know, i would love to hear your improvement news .
what opening should i use? i play london can't climb over 1000 game