Yes, check the description of each course to see which textbook you’re going to need. Each book covers the contents of 3 different levels, so you won’t have to buy another book if you want to continue to the next course. Having the aid of a textbook will provide you with a helpful structure in your learning process. We combine the book’s excellent materials and resources with other engaging activities, such as games, projections, role-plays, flashcards, videos, etc