They are 4 e-books that can be found at:

https://jontaffer.com/product-category/books/

E-books list:
-TAFFER MANAGEMENT SERIES - Grand opening dynamic
-TAFFER MANAGEMENT SERIES - Human Resource dynamics
-TAFFER MANAGEMENT SERIES - Menu Design Dynamics
-TAFFER MANAGEMENT SERIES - Promotion Dynamics


ANYONE INTERESTED IN GROUP BUY - CONTACT ME