I think that many opening books are part explanation and part reference material with the idea that one mostly skips the reference material on a first reading, and looks at an individual item when it applies to a game that one has just played.
How to make a repertoire?
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I feel like I have been approaching making a repertoire the wrong way. The way I have been doing it is I look at a lot of theory written by grandmasters. But now I find it is much more effective to play it youself and discover why the sidelines are bad.
Thoughts?