This textbook for classes in logic introduces students to both the skills of deductive and inductive logic as well as the virtues of intellectual inquiry.
Read for a first time logic class in school and also participated in a research project for Byerly. I was very much a guinea pig this semester but wound up with an A in the class which was a combination of reading this and having a good prof (I was confused on the way Byerly explains informal proofs). I liked the virtues of inquiry except where they were repetitive or could have had simpler definitions.