You mean like what Kingscrusher videos you should watch, and in what order? 

No,i dont't know about your kingcrusher videos.

Kingscrusher not Kingcrusher, Anything you wish to learn about Chess is found in Kingscrusher's domain. 

English may not be his first language. I don't think he meant theory as in opening theory. I think OP just means what's the best way to study chess.

The best way is to learn a little bit about everything. The most fun way is to learn a lot about what you find fun or interesting (although you'll still have to work at learning).

Something like:

Do tactic drills a little bit each day (solve puzzles).
Learn about strategy. I suggest reading a whole book.
Then endgames (another book)
Then play over an annotated game collection (another book)
Then openings (I like to use databases)

After that repeat the process. Each cycle will gain for you many 100s of points. Strategy, endgames, annotated games, openings. After you decide you will be playing an opening line, you can make it part of your drills. Maybe on day instead of tactics you get out a board and see if you remember your opening lines without any prompts.

Thanks,my plan is also very similar to your's（The chin of Quinn's）,but I like to learn little bit about chess calculation and panning also.

"... The reader will receive the necessary basic knowledge in six areas of the game – tactics, positional play, strategy, the calculation of variations, the opening and the endgame. ... To make the book entertaining and varied, I have mixed up these different areas, ..." - GM Artur Yusupov (2008)

That's a lot of books... Maybe start with one book that covers everything? Kindaspongey mentions Yusupov's book. I have "The Mammoth Book of Chess" by Graham Burgess. It's a lot more comprehensive that the standard beginners book. Might be a good book for around 1500? I found it rather off putting when I was 1200, but now I'm around 1400 I'm starting to read it more and finding it useful, because it does go into quite a lot of detail in all these different areas. Also, for relaxation, and mental stability, take up meditation. But coming from Sri Lanka, Aiyaa, you can probably teach us about that .

If  you  want  to  become 2000+ rated player, you have to  read what every player rated 2000+ on  their  way  to GM status has read.  It is  a  book that will open your eyes about how  to  play chess.  The book is titled "My System", by Aaron Nimzowitsch.

First he teaches something very  unusual.  He shocks you by introducing the idea that chess is  Siege Warfare.  And, that there are 3 strategies in Siege  Warfare:  restrain, blockade, and execute the enemy.

I have analyzed several of  your games.  You are ready  to read and understand My System.

I wish you tough positions and tough opponents on your way to becoming what strong players call themselves, Professional  Gunslinger. 

Is "My System" the key study text for a 1500 player? My bet is it isn't. There might have been an old physics text published about the same time as "My System", but no one uses it as a key text on university physics courses, they use a more modern text because teaching methods and physics have moved on. If chess didn't have a, more modern, better, text at the level of "My System" it would be rather sad...

It really comes down to how many hours you are willing to grind each day. Balance your play and study and by play I mean tournament rated games.

@Mal_Smith, if an amateur player reads and understands even half of My System, they would zoom past 1500 so fast it is isn't even funny.  When you consider the amount of detail covered in relatively few pages, I'm not sure there is a 'better' modern book.  I mean, "How To Reassess Your Chess" is certainly a good book, but is it and the accompanying workboook, over 1,000 pages total, really a better use of time and resources than My Systems's 300 or so pages?  I don't know.

Anyway, in terms of studying chess, I believe the best benefit-to-time ratio is studying master games.  Find a collection of annotated games, such as the Best Games of Alekhine or Morphy or Shirov or whomever, and work your way through that.  You'll see tactics, endings, openings, strategy, critical positions, typical motifs, everything you need to advance as a player.  You can never study too many master games.

"My System" also has the problem of too much repetition of the same message.

What is important bears repeating.

The 2 Chess theories regarding control of the center.

1. Classical Theory of center control.  Occupy the center (d4, d5, e4, e5) squares  with  your pawns and pieces in order to control the center.

2. Hypermodern Theory of center control.  Control the center with the power of your pawns and pieces.  With this method you do not give your opponent any targets in the center.

Three books and databases is a lot of books?  An all-in-one book is designed to get you over 1000 online, maybe 1200.

When I was in high school running long-distance cross country and track, inside of our team meeting room was a poster that said, "Endurance is not something you put on like a coat: you build it day by day."

So even the simple act of running requires years of preparation before anyone becomes semi-elite.  The same is true of chess.

Except for Erik, Quinn, and others who are near 2000, if the rest of us knew an easy way we'd be at 2000.  I have been 2100+ USCF correspondence since the pre-computer 1970's and I guarantee you I would not be close if I didn't long books on individual chess topics.  I've had a few games recently where I was headed to a 1 or 2 pawn edge in the endgame and that was fine with me: ever since I studied Reuben Fine's Basic Chess Endings decades ago, I've felt very confident in such endgames.

Currently I'm studying Dan Heisman's Back to Basics: Tactics (200 pages with hundreds of problems), next is his The World's Most Instructive Amateur Game Book (328 pages), then Jeremy Silmans' How to Reassess Your Chess, 4th Ed. (658 pages) and the Workbook that goes with it (423 pages).  I hope to complete it all before I go on a Caribbean Cruise in August.

That will NOT represent as much work as players very serious about improving their game accomplish.

what is the best order to study chess theory ？

1 - Start from the beginning.

2 - After step 1, go to intermediate.

3 - ...

I've been over 2000 USCF for whatever that's wroth. I've only played a few blitz games here.

And yeah, I meant my suggestion to be over many years, so if you consider it as a few books a year it's not very many.

Which is a long winded way of saying I agree with you

A *comprehensive* all in one chess book, like Burgess, is like an all-in-one first year college physics text (Halliday and Resnick...) To absorb everything in it would take a year of dedicated study by someone who is thoroughly conversant with a *beginners* all in one book for 1000 players. Being a lazy student, I have been using Burgess for three years and still only scratched its surface. Doing that, game analysis, and some tactics trainer, and using a free online database has got me to 1400