I learned lot during this course in regards to building a webssite with drupal. Though the book, as well as the learning platform need an update. There is several information that is not up-to-date in regards to drupal 10 and some activities are in the book and on the platform the same and at the same time not the same. One thing that I would like to point out is, that it is better if you have at least some experience with composer, otherwise it can be rather difficult at the beginning.
Though Fran provided a very good and fast support (sometimes even on the same day). Thank you, Fran, at this point, for your fast response and support in all matters. This helped me a lot with completing the course.