For general knowledge I find Wikipedia's "Vital articles"[1] a good place to start. They're organized in levels, with the 10 most general articles (e.g. Human,

For general knowledge I find Wikipedia's "Vital articles"[1] a good place to start. They're organized in levels, with the 10 most general articles (e.g. Human, Language, Life, Mathematics, Philosophy) on level 1 and then sort of branching out, level 2 consisting of 100 articles (e.g. Civilization, Literature, Logic, Psychology, Arithmetic) and so on. [1] https://en.wikipedia.org/wiki/Wikipedia:Vital_articles/Level/1 https://en.wikipedia.org/wiki/Wikipedia:Vital_articles/Level...