A few things I'd like to add (yes I'm <1000, but I plan to change that)
1. While there are exceptions to this, do trade if you are up a considerable amount of material.
2. There are some very rare instances where bringing the queen out early is correct. For example, after 3. Nxe5 fxe5 in the Damiano Defense, the aggressive 4. Qh5+ is actually the correct move. Every other move is a blunder.
3. Learn opening traps to stop them. Do not learn them to play them.
4. Equal trades aren't always equal. Don't trade a very active bishop for an enemy knight that's in a completely useless spot.
5. When faced with the Vienna Gambit as black, do NOT take the f-pawn. d5 is the correct move.
Today I will be telling you how to get better (to reach 1000+ elo) in both Chess.com and in USChess.
1. Don't trade everything
2. Don't bring your queen out in the opening
3. Don't Scholar's Mate
4. Castle within the first 10 - 12 moves
5. Use Queen's Gambit instead of King's Gambit
6. Only accept gambits if you know the lines (accepting King's Gambit without knowing the lines is the only exception)
7. DO NOT play the Blackburne Shilling over 800 elo rated players
8. DO NOT take the free pawn in the Blackburne Shilling
9. Remember lots of lines in Analysis
10. Move within 25 seconds