Maybe Dvoretsky stuff?
https://web.archive.org/web/20140708085131/http://www.chesscafe.com/text/review303.pdf
https://web.archive.org/web/20140708233203/http://www.chesscafe.com/text/review333.pdf
https://web.archive.org/web/20140708110249/http://www.chesscafe.com/text/review578.pdf
https://web.archive.org/web/20140708085153/http://www.chesscafe.com/text/review693.pdf
https://web.archive.org/web/20140708103913/http://www.chesscafe.com/text/review748.pdf
https://web.archive.org/web/20140708233815/http://www.chesscafe.com/text/review399.pdf
https://web.archive.org/web/20140708234012/http://www.chesscafe.com/text/review656.pdf
What books would you recommend to an 1850 rated player on this site?

yusupovs series "build up your chess" and so on, first the four orange ones, then blue, and finally green.
Aagaard writes: "But I am also a writer and a publisher and I have opinions on what I think are really good sources of material. For players under 2300, the Yusupov series is brilliant training material. Even 2200s will sweat over some aspects in The Fundamentals triplet, though some of it will be easy sailing. But as you are building a new habit, this is not a bad thing.
For those over 2300, I recommend my Grandmaster Preparation series, as well as Practical Chess Defence and the Quality Chess Puzzle Book."

yusupovs series "build up your chess" and so on, first the four orange ones, then blue, and finally green.
Aagaard writes: "But I am also a writer and a publisher and I have opinions on what I think are really good sources of material. For players under 2300, the Yusupov series is brilliant training material. Even 2200s will sweat over some aspects in The Fundamentals triplet, though some of it will be easy sailing. But as you are building a new habit, this is not a bad thing.
For those over 2300, I recommend my Grandmaster Preparation series, as well as Practical Chess Defence and the Quality Chess Puzzle Book."
Thanks Die_Schanze, I have five of the nine Yusupov books and they are pretty good.I have just not worked my way through all of them. I also have GM Prep Calculation and Positional Play and cannot praise them highly enough.

Lots of good book recommendations here....many should be appropriate for you...
https://www.chess.com/blog/RussBell

The old book by Keres and Kotov, The Art of the Middlegame, may be priced just right for you: it's excellent for explaining how you determine plans and tactics. For me, it's 2nd chapter, "Strategy and Tactics of Attacks on the King," are the 50 best pages of chess instruction ever written.
"... lower rated players will get something useful out of [the first section by Golombek] ..., [Kotov's 'Strategy and Tactics of Attack on the King' and 'Various Pawn Positions in the Center'] will be enjoyed by Class B and A players ... the two Keres’ offerings: 'How to Defend Difficult Positions' and 'The Art of Analysis.' ... are advanced, and I think that players of expert strength and higher will get the most out of them (actually, 'The Art of Analysis' is for senior masters, IMs, and grandmasters). ..."
http://www.jeremysilman.com/shop/pc/Art-of-the-Middlegame-The-77p3554.htm
my system is the only book you need.
thata a great book along with chess praxis.
https://www.qualitychess.co.uk/ebooks/MySystem-excerpt.pdf
https://www.qualitychess.co.uk/ebooks/ChessPraxis-excerpt.pdf
Please recommend some books which will help me improve. Looking forward to getting some good suggestions.
TIA.