> For an even more basic introduction I'd recommend starting with Lawvere and Schanuel's Conceptual Mathematics: A First Introduction to Categories. Requires le

> For an even more basic introduction I'd recommend starting with Lawvere and Schanuel's Conceptual Mathematics: A First Introduction to Categories. Requires less abstract algebra. If you have some mathematical intuition then this is the book to start with. It's a great book! Don't forget to do the exercises. It starts off very easy but if you don't do the exercises all of a sudden you'll be lost.