Stuck around 600-650


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

https://www.chess.com/blog/DonRajesh/top-10-ways-to-get-better-at-chess
The blog above could help you improve your skill. To better convert your skill into a better rating you could read this: https://www.chess.com/blog/DonRajesh/how-to-bring-up-your-rating
I hope it helps.

Openings are one of the least important things at 650 level. Tactics are the most important area. Pins, skewers, double attacks, discovered checks, those kinds of things win pieces and having a extra piece often wins the game.

Openings are one of the least important things at 650 level. Tactics are the most important area. Pins, skewers, double attacks, discovered checks, those kinds of things win pieces and having a extra piece often wins the game.
agreed
This video is a good 10 minute summary that might help you. He reviewed a bunch of games and found the reasons 600 rated players lost games. He gives some ideas to reduce the number of blunders - which is why 600 rated players lost 86% of the games he reviewed. "Beginner Tips to Break 600 Rating - How to get better at chess - Beginner chess strategy and ideas"
https://www.youtube.com/watch?v=Y44JAvB8azM&list=PLp7SLTJhX1u4aTSwU08IR6AV_gJC-yOzM


Don't study openings. Just take your time. Do tactics. Look 1, 2, 3 moves ahead.
That basically means,
Do games that are 30 minutes or more
Also, review basic opening principles and follow those and learn a few opening traps and only after castling start going into your opponent's territory to do some damage and in the endgame, hold on to your pawns and trade only when it's safe

Play one day. It allows for more time for each play and you have more time to think.
You mean daily chess
before you make a move you should always think what will it accomplish and make sure it is not losing a piece don't just play the first move you think is good

Any simple answers, study ‘book openings’ more closely?
I need to look at your games to give you an accurate answer, just general answers are rediculous. (before a doctor is giving you a drug, he needs to perform a diagnose - otherwise it's malpractice).
Please, fill this quiz, tell me what you got:
https://www.chesspersonality.com/
And please tell me what You think is your chess personality, because this quiz is not perfect. [example: me. I consider myself as positional, but aggressive. so against e4, I didn't choose Sicilian - not solid enough for me. but I didn't take Caro-Kann - too passive for me. I took 'French' - the average approach].
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I saw one game of yours, you played e4, opponent played Scandinavian Defense.
Are you comfortable with e4?
Are you a tactical player, or a positional player? you can answer is percentage - 30% tactical, 70% positional, etc. Because if you're more positional, you need to choose d4. I'm positional, and I played e4 even since I started, for 10 years, because that's what everyone was teaching me, and it turned out to be a Big mistake. Now I play d4, and I'm happy. or course, the trasition progress took time and effort. but... it was worth it!
Okay, This article looks more serious, look have a look:
https://www.chess.com/article/view/whats-your-chess-personality
Ah, sorry, it's the same quiz.
I got 'Grinder' - Karpov.

My advice is to try to study a couple of solid openings that are easy to memorize and don't have much theory. Also try to do a good amount of puzzles every day (try to aim for like 10 a day). Also, try playing rapid if you aren't already and not blitz out all of your moves. The youtuber gothamchess does have a good amount of solid introduction videos to good openings in a short amount of time such as for the scandinavian or even the caro-kann.
My technique is to do lessons, puzzles then play some matches to see how things are going. Now if I start playing matches and lose I'll stop do something else then come back later with a lesson or puzzles again, feel like I'll absorb some new principal even if I have done the lesson before eventually.
I like to stop immediately if losing more than 100 points rating on whatever rating is most important. Like yesterday I had a few too many and played some blitz 5|0 which I am poor at and was losing more than usual.
Any simple answers, study ‘book openings’ more closely?