What are the best textbooks (or comprehensive primers) which are freely available online? Ideally as web content, not as PDF.
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The Structure and Interpretation of Computer Programs, Abelson and Sussman. mitpress.mit.edu/sites/default/ I also highly recommend the accompanying lectures filmed in the 80s which are available in higher ish resolution on YouTube.
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this is a nice rendering — sarabander.github.io/sicp/html/Chap
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