Also what might make sense to you, might not make sense to others or the other way around.
Chess Theory; How Would You Approach It.

Exactly what SmyslovFan said. All 'theory' is, for example with openings, is the currently established known ways to play in terms of current practice. 'Theory' in chess doesn't have the same meanings as it might have in other pursuits, eg. science or whatever.

Exactly what SmyslovFan said. All 'theory' is, for example with openings, is the currently established known ways to play in terms of current practice. 'Theory' in chess doesn't have the same meanings as it might have in other pursuits, eg. science or whatever.

Exactly what SmyslovFan said. All 'theory' is, for example with openings, is the currently established known ways to play in terms of current practice. 'Theory' in chess doesn't have the same meanings as it might have in other pursuits, eg. science or whatever.
Point taken. Every body is different. And so is one need.
By the way, does that "C. M. " before your name have some significance?

Yes, the red CM is an official designation by chess.com recognizing that player’s formal FIDE title as a Candidate Master. There are several ways to earn the title, but basically, he or she is one of less than one per cent of all tournament players.

No, not really. You can get titles for various rating milestones over the board, CM is just for getting to 2200 FIDE. It doesn't really mean anything. It's the lowest title.

Yes, the red CM is an official designation by chess.com recognizing that player’s formal FIDE title as a Candidate Master. There are several ways to earn the title, but basically, he or she is one of less than one per cent of all tournament players.
I thought so. Thanks for explaining.

No, not really. You can get titles for various rating milestones over the board, CM is just for getting to 2200 FIDE. It doesn't really mean anything. It's the lowest title.
You don't have to underrate yourself. You have achieved a lot here. It's a good thing.
Remind me what the "C" stand for.
Do not underestimate the "theory"!

I see now why you don't play chess. In the post directly above your latest, you quote me, when I explained what the "C" stands for.

I see now why you don't play chess. In the post directly above your latest, you quote me, when I explained what the "C" stands for.
That is due to short time memory problem, and fast reading of text. Again you are correct.

No, not really. You can get titles for various rating milestones over the board, CM is just for getting to 2200 FIDE. It doesn't really mean anything. It's the lowest title.
You don't have to underrate yourself. You have achieved a lot here. It's a good thing.
Remind me what the "C" stand for.
Do not underestimate the "theory"!
So you are a master and can not add to this thread anything. Does that mean I am mastering the theory and didn't know it! Lol.

How would you approach learning about the Chess Theory?
I am hopeful that you can assume we know about: 1. Various Openings including opening rules. 2.positional and pawn structures. 3. Basic known endgames.
So again, how would you approach learning about the Chess Theory?
"... for those that want to be as good as they can be, they'll have to work hard.
Play opponents who are better than you … . Learn basic endgames. Create a simple opening repertoire (understanding the moves are far more important than memorizing them). Study tactics. And pick up tons of patterns. That’s the drumbeat of success. ..." - IM Jeremy Silman (December 27, 2018)
https://www.chess.com/article/view/little-things-that-help-your-game
https://www.chess.com/news/view/a-new-years-resolution-improve-your-chess-with-new-lessons
"... In order to maximize the benefits of [theory and practice], these two should be approached in a balanced manner. ... Play as many slow games (60 5 or preferably slower) as possible, ... The other side of improvement is theory. ... This can be reading books, taking lessons, watching videos, doing problems on software, etc. ..." - NM Dan Heisman (2002)
https://web.archive.org/web/20140627084053/http://www.chesscafe.com/text/heisman19.pdf
Here are some reading possibilities that I often mention:
Simple Attacking Plans by Fred Wilson (2012)
https://web.archive.org/web/20140708090402/http://www.chesscafe.com/text/review874.pdf
http://dev.jeremysilman.com/shop/pc/Simple-Attacking-Plans-77p3731.htm
Logical Chess: Move by Move by Irving Chernev (1957)
https://web.archive.org/web/20140708104437/http://www.chesscafe.com/text/logichess.pdf
The Most Instructive Games of Chess Ever Played by Irving Chernev (1965)
https://chessbookreviews.wordpress.com/tag/most-instructive-games-of-chess-ever-played/
Winning Chess by Irving Chernev and Fred Reinfeld (1948)
https://web.archive.org/web/20140708093415/http://www.chesscafe.com/text/review919.pdf
Back to Basics: Tactics by Dan Heisman (2007)
https://web.archive.org/web/20140708233537/http://www.chesscafe.com/text/review585.pdf
https://www.chess.com/article/view/book-review-back-to-basics-tactics
https://static1.squarespace.com/static/5856bd64ff7c50433c3803db/t/5895fc0ca5790af7895297e4/1486224396755/btbtactics2excerpt.pdf
Discovering Chess Openings by GM John Emms (2006)
https://web.archive.org/web/20140627114655/http://www.chesscafe.com/text/hansen91.pdf
Openings for Amateurs by Pete Tamburro (2014)
http://kenilworthian.blogspot.com/2014/05/review-of-pete-tamburros-openings-for.html
https://chessbookreviews.wordpress.com/tag/openings-for-amateurs/
https://www.mongoosepress.com/catalog/excerpts/openings_amateurs.pdf
Chess Endgames for Kids by Karsten Müller (2015)
https://chessbookreviews.wordpress.com/tag/chess-endgames-for-kids/
http://www.gambitbooks.com/pdfs/Chess_Endgames_for_Kids.pdf
A Guide to Chess Improvement by Dan Heisman (2010)
https://web.archive.org/web/20140708105628/http://www.chesscafe.com/text/review781.pdf
Studying Chess Made Easy by Andrew Soltis (2009)
https://web.archive.org/web/20140708090448/http://www.chesscafe.com/text/review750.pdf
Seirawan stuff:
http://seagaard.dk/review/eng/bo_beginner/ev_winning_chess.asp?KATID=BO&ID=BO-Beginner
http://www.nystar.com/tamarkin/review1.htm
https://web.archive.org/web/20140627132508/http://www.chesscafe.com/text/hansen173.pdf
https://www.chess.com/article/view/book-review-winning-chess-endings
https://web.archive.org/web/20140708092617/http://www.chesscafe.com/text/review560.pdf

CHESS THEORY is quite an ambiguous term. Narrowing it down to specifics would be helpful.
Please read some of the previous posts. That is the purpose of this thread actually. That was my intention to begin with anyway.

"... for those that want to be as good as they can be, they'll have to work hard.
Play opponents who are better than you … . Learn basic endgames. Create a simple opening repertoire (understanding the moves are far more important than memorizing them). Study tactics. And pick up tons of patterns. That’s the drumbeat of success. ..." - IM Jeremy Silman (December 27, 2018)
https://www.chess.com/article/view/little-things-that-help-your-game
https://www.chess.com/news/view/a-new-years-resolution-improve-your-chess-with-new-lessons
"... In order to maximize the benefits of [theory and practice], these two should be approached in a balanced manner. ... Play as many slow games (60 5 or preferably slower) as possible, ... The other side of improvement is theory. ... This can be reading books, taking lessons, watching videos, doing problems on software, etc. ..." - NM Dan Heisman (2002)
https://web.archive.org/web/20140627084053/http://www.chesscafe.com/text/heisman19.pdf
Here are some reading possibilities that I often mention:
Simple Attacking Plans by Fred Wilson (2012)
https://web.archive.org/web/20140708090402/http://www.chesscafe.com/text/review874.pdf
http://dev.jeremysilman.com/shop/pc/Simple-Attacking-Plans-77p3731.htm
Logical Chess: Move by Move by Irving Chernev (1957)
https://web.archive.org/web/20140708104437/http://www.chesscafe.com/text/logichess.pdf
The Most Instructive Games of Chess Ever Played by Irving Chernev (1965)
https://chessbookreviews.wordpress.com/tag/most-instructive-games-of-chess-ever-played/
Winning Chess by Irving Chernev and Fred Reinfeld (1948)
https://web.archive.org/web/20140708093415/http://www.chesscafe.com/text/review919.pdf
Back to Basics: Tactics by Dan Heisman (2007)
https://web.archive.org/web/20140708233537/http://www.chesscafe.com/text/review585.pdf
https://www.chess.com/article/view/book-review-back-to-basics-tactics
https://static1.squarespace.com/static/5856bd64ff7c50433c3803db/t/5895fc0ca5790af7895297e4/1486224396755/btbtactics2excerpt.pdf
Discovering Chess Openings by GM John Emms (2006)
https://web.archive.org/web/20140627114655/http://www.chesscafe.com/text/hansen91.pdf
Openings for Amateurs by Pete Tamburro (2014)
http://kenilworthian.blogspot.com/2014/05/review-of-pete-tamburros-openings-for.html
https://chessbookreviews.wordpress.com/tag/openings-for-amateurs/
https://www.mongoosepress.com/catalog/excerpts/openings_amateurs.pdf
Chess Endgames for Kids by Karsten Müller (2015)
https://chessbookreviews.wordpress.com/tag/chess-endgames-for-kids/
http://www.gambitbooks.com/pdfs/Chess_Endgames_for_Kids.pdf
A Guide to Chess Improvement by Dan Heisman (2010)
https://web.archive.org/web/20140708105628/http://www.chesscafe.com/text/review781.pdf
Studying Chess Made Easy by Andrew Soltis (2009)
https://web.archive.org/web/20140708090448/http://www.chesscafe.com/text/review750.pdf
Seirawan stuff:
http://seagaard.dk/review/eng/bo_beginner/ev_winning_chess.asp?KATID=BO&ID=BO-Beginner
http://www.nystar.com/tamarkin/review1.htm
https://web.archive.org/web/20140627132508/http://www.chesscafe.com/text/hansen173.pdf
https://www.chess.com/article/view/book-review-winning-chess-endings
https://web.archive.org/web/20140708092617/http://www.chesscafe.com/text/review560.pdf
What a large contribution! I was hoping to see book titles and author's name, but this is too much tcomplain about. As usual you are great. Thanks.

I believe much study must be concentrated on 1. Chess Principles (theories behind each chess piece, strengths/weakness, how to use them effectively etc.) 2. Chess Openings and 3. End Game study.
I only have old books that may be a good contributor for Beginner to Intermediate (or maybe even also for Advanced)
Bruce Pandolfini's Chess Openings: Traps and Zaps
Jerry Silmans Complete Endgame Course.
These are general topics that cover much i suppose. For someone that wants deeper Study on specific Openings of course there are numerous books that cover that. Plus the Engine analysis would be additional help as well. I would love to study them too but I'm not really into serious chess. Just having fun, win or lose
Learning about chess theory involves opening, middle, and endgames. Each of these three could be broken down into a variety subjects. How would you identify what subject(s) to include for any/all parts of chess theory?
You've been here since 2010 and haven't played a single game here. The first thing I would do is to start playing some games and gaining experience in chess.
...
... my interest is learning about chess, not playing. At least, not now.
Chess serve me for concentration and general life applications which I will not discuss in this forum.
Theory in chess is tied to practice. There's absolutely no sense discussing chess theory without practicing it. And yes, that's kinda like life, too.
You have a good point theory is tied to practice. But nothing is absolute. At some age/experience you could have an overview of theory and improve dramatically at least to some extent.
By reading you could build concentration and visualization and see some moves ahead, which is what I am doing.
The rest could wait for an appropriate time when one could play too.
One of life application is critical thinking that helps me.