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I'm looking for a textbook with which to independently study fluid mechanics. I have been searching a bit by myself, and my problem with what I have found so far is that the texts assumed certain amounts of prior knowledge in fluid mechanics. I'm looking for a textbook that assumes no prior knowledge in fluid mechanics or other advanced physics fields and builds up the theorems and equations from first principles (though I have already studied Newtonian mechanics and multivariable calculus so books that contain those are fine and actually preferred). I am also looking for a textbook that contains many details and proves most theorems and formulas (but without being absurdly complicated) and if possible that uses mathematical tools, at least somewhat (not as crucial). And unlike the other question, the textbook must have a physics/math approach not an engineering one. I know no engineering. Online PDFs only please!