Would it be illegal to sell notes that I have made using my own reading and understanding of a textbook and nothing else (like nothing from lectures of classes (they were all online so there were no lectures)). I'm assuming it would be illegal if I were to copy images from the textbook but if my notes were snippets of the singular textbook and what I find to be important information, of which are mostly notes that I've written verbatim, would that be illegal and considered as a condensed version of the textbook? If so, if I were to cite the textbook would I then be able to profit from my notes?



Illegal to sell textbook notes?