Personal Trainer: Fitness For A Healthy Back – Franziska Beckmann & Janina Schmoll

Here's an overview of the prominent keywords and a list of famous authors:

Business and Sales: Explore business strategies, sales skills, entrepreneurship, and brand-building from authors like Joe Wicks, Jillian Michaels, and Tony Horton.

Sports and Fitness: Enhance athleticism, improve health and fitness with guidance from experts like Shaun T, Kayla Itsines, and Yoga with Adriene.

Personal Development: Develop communication skills, time management, creative thinking, and enhance self-awareness from authors like Gretchen Rubin, Simon Sinek, and Marie Kondo.

Technology and Coding: Learn about artificial intelligence, data analytics, programming, and blockchain technology from thought leaders like Neil deGrasse Tyson, Amy Cuddy, and Malcolm Gladwell.

Lifestyle and Wellness: Discover courses on holistic health, yoga, and healthy living from authors like Elizabeth Gilbert, Bill Nye, and Tracy Anderson.

Art and Creativity: Explore the world of art, creativity, and painting with guidance from renowned artists like Bob Ross and others.

All the courses on WSOlib are led by top authors and experts in their respective fields. Rest assured that the knowledge and skills you acquire are reliable and highly applicable.