How not to violate copyright when creating your own course on YouTube?

Question

Licenses for software and other works

Good afternoon, I had an idea to create a training course based on a book on system administration. Therefore, questions arose:
1. How legal is it to retell a book according to one's own script?
2. How legal is it to copy concepts/pictures from the course onto the board?
3. If in each video I indicate on the basis of which book the course was created, will it legalize paragraphs 1 and 2?
Accordingly, the text of the book itself will not be shown, with the exception of the book cover, only pictures and concepts, and then on the board by hand, I will write everything else in my own words and in my presentation on a PC and print it on a printer.