Leitfaden

noun
  1. A guide or manual that provides direction or instruction on a particular subject. noun
    The teacher handed out a Leitfaden to help students understand the course material.
    Before starting the project, we reviewed the Leitfaden to ensure we followed all the necessary steps.
  2. A guiding principle or theme that influences or directs actions or thoughts. noun
    The company's Leitfaden is to prioritize customer satisfaction above all else.
    In her speech, she emphasized the Leitfaden of unity and cooperation.