It's free & it's not mine
https://youtube.com/playlist?list=PLHl8nuacOfLK709_hb3ViX3Nef9WchSQH
I had a look and it is very well done. Thanks for sharing.
Will order the paper book - not because I need it, but because I am also teaching Scribus to our team. And this author knows his stuff.
The book is here on Amazon.de (https://amzn.eu/d/8YGJHF3)