In conclusion, is not a revolutionary product, but it is a nearly perfect tool for its purpose. It rejects flashy distractions in favor of the proven method of listen, repeat, and compare. For the motivated beginner who lacks money but possesses discipline, book2 is one of the best resources on the internet. It reminds us that learning a language, at its core, does not require artificial intelligence—just a good list of sentences, a patient native speaker to imitate, and the will to practice.

Furthermore, the scope of book2 is staggering. Goethe-Verlag offers materials for over , ranging from widely spoken ones like Spanish and Mandarin to less-common ones like Icelandic, Albanian, or Zulu. For many minority or endangered languages, book2 represents one of the few free, structured entry points available to the public. In this sense, the project serves not only individual learners but also cultural preservation and linguistic diversity.

Critics might argue that book2 is too basic. It does not explain complex grammar, offer interactive exercises, or track user progress. It will not bring a student to advanced fluency. However, this criticism misunderstands the project's intent. Book2 is explicitly designed for and false beginners —those who need to survive basic communication during travel, immigration, or initial study. It aims to build an automatic vocabulary of roughly 1,800 words and common sentence patterns, enough for A1 and A2 levels of the Common European Framework of Reference (CEFR).