A: For personal study, taking photos of a few pages is generally accepted as fair use. Photographing the entire book and distributing it is illegal.
The series is specifically aligned with international standards:
The "Netzwerk B2 Kursbuch" is a German language coursebook designed for learners at the B2 level of the Common European Framework of Reference for Languages (CEFR). The B2 level is equivalent to an upper-intermediate level of proficiency, where learners can understand complex texts, interact with a degree of fluency and spontaneity, and produce clear and detailed texts.