I'm below 1600 to 1700 on lichess, though I don't play as much there. I've found that nothing beats playing games and analyzing them afterward. The analysis is first just using my wits, then with an engine. I'm mostly looking to see where I made a mistake or where my opponent made a mistake and I missed it. I build drills to teach myself what moves to play in given positions. I use chessable for that.
I agree with the commenter who said that 1200-level players on chess.com do come with opening prep and will try to catch you out with their pet lines. Obviously it's too much to learn refutations for all the crazy gambits out there, but it's worth spending a bit of time understanding openings. The fine article we're commenting on does not go too far -- even for a beginner, it's worth knowing the difference between a Sicilian and a Caro-Kan. Even just learning the first four moves of the common openings is worthwhile, because it will save you time and energy that you need for the middlegame.
I agree that learning deep theoretical lines is a waste of time. Most likely you'll be out of book by move five in an amateur game. So learn a small number of moves (ideally, with a good reason why that move makes sense, even if it's just to develop a piece) and have some idea of the common plans that each side has in that opening.
I agree with the commenter who said that 1200-level players on chess.com do come with opening prep and will try to catch you out with their pet lines. Obviously it's too much to learn refutations for all the crazy gambits out there, but it's worth spending a bit of time understanding openings. The fine article we're commenting on does not go too far -- even for a beginner, it's worth knowing the difference between a Sicilian and a Caro-Kan. Even just learning the first four moves of the common openings is worthwhile, because it will save you time and energy that you need for the middlegame.
I agree that learning deep theoretical lines is a waste of time. Most likely you'll be out of book by move five in an amateur game. So learn a small number of moves (ideally, with a good reason why that move makes sense, even if it's just to develop a piece) and have some idea of the common plans that each side has in that opening.