TruthBooks are the student workbooks.
- Each TruthBook contains six doctrinal themes.
- Each TruthBook has 10 core units (Q&As) and 2 review units for each doctrinal theme.
- Books range from 155 to 190 pages.
- TruthBooks are available in two books: book 1 (themes 1–6; questions 1–60) and book 2 (themes 7–12; questions 61–120).