Any Tips For 300 Rating?

Improving Your Chess - Resources for Beginners and Beyond...
https://www.chess.com/blog/RussBell/improving-your-chess-resources-for-beginners-and-beyond

I just looked at your game vs queencece511. On move 6 you reach this position:
You are making 3 mistakes here.
1. The most important mistake is not taking enough time to analyze the position. You have 9:40 minutes remaining on the clock. That's more then enough time to find the best move and make sure you don't blunder a piece. Instead you only use 2 seconds. Mistakes 2 and 3 are a direct result of this first one.
2. You didn't find the best move 6. Qxe4+. You can take the pawn with check. If you're lucky and white plays 7. Be2 you can even take the Rook with 7. Qh1+. (if 7 Qe2 you can either trade Queens or pay Nf6).
3. You didn't check if your move 6. Qh5 was a good move or not. As a result you didn't see that your opponent could simply take your Queen.
On my blog I wrote an article about the basic decision making process. For each move you need to go through these 4 steps:
- Look at the board
- Identify candidate moves you can play
- Evaluate the position for each of the moves
- Pick the best one
Good luck on your journey!

Any Tips?
Play slow games, not Blitz or Bullet.
Look over every one of your lost games. Try to figure out WHY you lost each time.
Forget openings. Study endgames, tactics and model mates.

Hi! Start with basic mates like Queen +King vs King, Rook+ King vs King, basic endgame like Pawn+ King vs King and 2 Pawns+ King vs 1 Pawn +King ...then try to solve some Chess.com puzzles, and remember that when playing in the opening, try to quickly develop your pieces, occupy the centre, and put your king on safety.
Good luck!

You should learn most important principles of a chess game. That will give you a solid understanding of a chess game and you will know what to do in every position. Then, you should optimize your calculation so you don't miss tactics in your games. I can help you with all of this. Message me if you are interested.
Any Tips?