Where can I read about preparing materials for publication?

Question

Design

All the little things that will help make the printed product even better and more enjoyable.

Answer 1

Better run fast and away from the prepress before it's too late. On only one color rendition, you will thunder into a fool

Answer 2

https://prepressfd.wordpress.com
Smurov "Prepress for the designer"

Answer 3

The answer asks for a picture "How to draw an owl"
What materials should be printed? Photos on a photo printer? Silkscreen on T-shirts? Magazines in offset printing? Billboards 6x3 meters?