These readers are available in 4 levels, which correspond to levels A1-C2 of the CEFR. Each one is divided into chapters with a glossary and includes notes about the author and the time the book was written. There are pre- and post-reading activities which teach vocabulary, lexical structures, and exercises. The CD's are a reading of the text, read by a native speaker. Additional resources for students and teachers are available as free downloads.