Volumes 1, 2, 3 & 4 make up the entire On Second Thought: From Iffy to Witty Thoughts Program. It is suggested but not necessary, that you complete all 4 volumes.
SmartNotebook (Mac and Windows) *SmartNotebook (an interactive whiteboard) is typically used in educational settings for group use
Desktop/Laptop (Mac and Windows)
Tablets and Phones (IOS and Android)