Logic
Logic Self-Taught has a new fuller edition available from Amazon:
Workbook 1: Basic Concepts and Symbolization in Propositional Logic (2022)
Workbook 2: The Truth-Table Method (2022)
Workbook 3: Natural Deduction in Propositional Logic (2022) Thin Edition, Full Edition, Extra Full Edition
Workbook 4: Basic Concepts and Symbolization in Predicate Logic (2022)
Planned:
Workbook 5: Natural Deduction in Predicate Logic
Workbook 6: Basic Concepts and Symbolization in Quantifier Logic
Workbook 7: Natural Deduction in Quantifier Logic