Steve Awodey's Category Theory, hands down. https://www.goodreads.com/book/show/2047855.Category_Theory https://www.goodreads.com/book/show/2047855.Category_Th

Steve Awodey's Category Theory, hands down. https://www.goodreads.com/book/show/2047855.Category_Theory https://www.goodreads.com/book/show/2047855.Category_Theory It's a mathematics book written by a philosophy professor that is extremely readable for computer scientists. Very CMU, much wow, such deduction.