I've just discovered that there are some good videos about Scribus for beginners:
https://www.youtube.com/watch?v=hMlT9C6xcDw (Getting Started with Scribus)
https://www.youtube.com/watch?v=nB4dTL1IwI4 (Scribus Lesson 2 Image Frames and properties)
https://www.youtube.com/watch?v=JTo_NZeOPqA (Scribus Lesson 3 Add text frames)
https://www.youtube.com/watch?v=INVeoAx8J-g (Scribus Lesson 4 Add and remove pages)
and many more.
Maybe these videos will help you to get started with this fantastic publishing program.