This textbook is used in levels 1, 2 and 3 of our curriculum. It contains 9 instructional units, audios, a basic grammar section, and review exercises.
This is a printed (paperback) textbook; for the online courses, we recommend the online subscription which includes eBooks and many other resources. To get the online subscription on "Campus Difusion", please ask us and we will send you a step-by-step procedure.