My One-Year Journey From 300 to 900 Rapid
Wow! This is really inspiring for people who are struggling with their chess improvement! I was at a plateau near the 900's and 800's, but recently I have been improving a lot. One thing I recommend is, just like you said, to learn openings for white and black. I had always been stuck on playing the Italian game, but now I play the Sicilian for black and Queen's Gambit for white. That has substantially helped me improve. I just very recently crossed 1000 for my USCF rating, so I am glad to see others improving as well!