There’s basically an infinite amount of information available for free or nearly free when it comes to learning about any specific aspect of chess. Especially chess openings, people as a group love books about openings. And used books are “nearly free”.
Part of the “problem” is sorting through so much information and determining what openings will be the best fit for you when you won’t really know what’s best for you until you get there. And even when you think you’ve gotten there you’re not really there, chess goes on forever, and it’s hubris to think you really know anything. You’re always doing the best you can with imperfect knowledge and that’s how it goes.
When I was re-starting the hobby I decided that I wanted to learn the Caro-Kann opening. The thing is, most books aren’t broadly about a selected opening — many or most are “repertoire” books. What that means is that the author has picked out responses to the moves that the opponent could play and that’s the cross-section ideas that the book presents. Often the moves will represent one general approach and they’ll be internally consistent with each other. Mostly.
What I ran into was that two Caro-Kann books each had ideas that agreed with how I wanted to play the opening, but I wound up using 70% of one book and 30% of another specifically because the 70% author decided to throw in a “twist” for one very common series of moves. The thing is, while I do settle on a specific repertoire for each opening I’m much more interested in the concepts behind each one. Knowing the ideas is at least as important as memorizing the move orders themselves. The foundational ideas make the memorization easier, and they give you a backup if you blank on a move during a game.
I’m also learning the Nimzo-Indian, and that’s involved three books because (I think) the writers feel like if they don’t offer something new and novel then they’ll either be accused of copying an earlier idea, or the book won’t sell if it doesn’t offer something “fresh”. The books are all a hodgepodge of “solid” stuff mixed in with somewhat interesting-probably-not-very-accepted novelties. One way I’ll check a line is to go Lichess Opening Explorer and see how that line performs at the master level and around my level. If the line is a dog at both levels I’m going to pick something else that still fits within the framework of stuff I’m comfortable playing. Ideally the line should agree with what my “guys to emulate” (The “Posse”) would play as well.
As I write this, it’s raining and the mail carrier came and went. I just rescued another used/new to me book from the mailbox. It’s a well-regarded book on the Slav opening, and it has an overview of the core ideas and annotated instructive games. At the very least it should help broaden my knowledge of Black’s responses to White queen pawn openings. As of right now I’m using a combination of the Nimzo/Bogo/Queen’s Indian defenses, so the new material might be fun for some casual games to get a feel for it, though at this point I’m enough invested with what I’ve already chosen that I wouldn’t make a permanent change away from that existing group of openings lightly. Additionally- of the nineteen guys in my “Posse” database, only one plays/played the Slav as Black as their primary opening. For the other 2/3rds it’s primarily Nimzo.
So hopefully I’m on the right track.








