Stuck at 600. Any tips to improve?

I'm getting frustrated because I manage to beat <600 opponents with relative easiness but I can't break away from this score. I would like to ask you for advice on how to improve.

I've written a blog for questions such as this one.

Here you go:

https://www.chess.com/blog/nklristic/the-beginners-tale-first-steps-to-chess-improvement

I hope you will find it useful.

Until you are master, your opening repertoire is tactics, your middlegame strategy is tactics, and your endgame technique is tactics.

Tactics training and checking if you don't blunder a piece. You know the necessary basics, now you have to work on avoiding your own blunders and punishing your opponent's.

Which is the best way of training tactics? Any advice, @dannyhume and @Propeshka?

Chess.com puzzles are a good start. However actual puzzle books are even better.

What do you think about Chess Tempo puzzles? I don't know why, but for me they somehow feel more useful when compared to other online puzzles. I don't know how to explain it better than that.

really study opening where there is traps

if you know theory and face other 600s you will destroy

That is incorrect. For instance one can study Sicilian for months and then white does this:

 

So beyond 3-5 moves, it is a waste of time to spend a lot of time on opening lines. It is fine to look at the explorer after the game to see where you perhaps made a deviation. But nothing more serious than that.

Besides, it is harder to learn theory when you are 600 then when you are  2200 for instance. When you are 2 200, some moves are just logical and comes naturally to you. When you are 600, you have no idea why someone played a specific move. It is random to you at that point.

very nice

I can’t help, I need help, maybe a mental asylum.

When you try a tactics problem, don’t move until you see the whole line and all of the possible variations ... it is a tactics problem so the variations by definition will be shorter and more decisive than the solution of the problem.

If you cannot do this, but still manage to solve the problem correctly by guessing a check or queen sacrifice or some other initial obviously forcing move, then go back and play out the moves you failed to anticipate with the engine pointing out what you missed. Just because your miss didn’t matter for solving that particular problem doesn’t mean that it won’t matter in a future problem or game.

If you get the tactics problem wrong, then go back with the engine and see what you missed or what resources you thought your opponent had but really didn’t, so that you can see and learn how the engine refutes such so-called resources that you thought were a threat, but were simply you seeing ghosts.

To piggyback on an earlier comment, I also like chess tempo … more defensive, drawing, and “best move” tactics which rounds out the skillset … how many can regularly solve mates in 5, 6, or 7, only to fall to a 2-3 move tactic in an actual game?

This is the worst advice of the year. Congratulations! Nice job.

Chesstempo is really good as well. Perhaps better than chess.com puzzles. 

Their endgame trainer is very useful too

Ah yes, I use my 2 problems per day as well. I think so as well but I am not able to interpret why I find it more useful, it is just a subjective feeling of mine. 

As mentioned before, chesstempo is good, and it's free.

The only drawback of "computer-generated puzzles" is that the solution might sometimes be unlogical since only an engine would play moves like saccing seven pieces just to delay mate. Therefore I'd rather choose a tactics book that was checked by humans. I like the electronic versions on chessable, but all of those books are also available on paper, if you prefer that.

Maybe check out "Everyone's first chess book" by Peter Giannatos (which teaches all the basic tactics as a workbook with selected puzzles), after that "The checkmate patterns manual" (good for beginners all the way up to masters) and "The Woodpecker method" (which I'd rather recommend for intermediate/advanced players) on chessable. Knowing checkmating patterns has really improved my game over the last couple of months because I thought that I knew them well but, in fact, I didn't.

Improving Your Chess - Resources for Beginners and Beyond...

https://www.chess.com/blog/RussBell/improving-your-chess-resources-for-beginners-and-beyond

Check out silmans books, they’re really good.