There are 18 levels of books, starting with level ANANAS and ending with level ROSE DES VENTS. Each level is in alphabetical order (Ananas, Bateau, Canard, etc...)
There is also a series of math books, a Livres à Compléter series of books for the youngest learners as well as a vocabulary series.
All of the books in the 18 levels are available to the teacher in PDF format as well as video format. With a license, a teacher's students can access the books in video format from both school and home. As they stream the video books, students can listen to the book being read and follow a visual cue on the screen to match what they hear with the text on the screen.
Many of the books in the 18 levels include a handout as well. When you preview a book that has a handout, you will see in the book description that a handouts available.