Before internet chess it was very common to analyze games either at the tournament with a group, or a club later also with a group, both usually having some str

Before internet chess it was very common to analyze games either at the tournament with a group, or a club later also with a group, both usually having some stronger players around. To do it yourself, the best explanation and framework I think is found in Yermolinsky’s “Road to Chess Improvement”. It’s very helpful in systemizing this and also has thorough explanations of his experience in analyzing his own games.