Print Basics 

This video explains the basics of sending QGIS maps to a printing press. It explains the differences between RGB and CMYK colors, and gives step-by-step instructions for several methods of converting images, PDFs, and SVGs using a range of software options.
ICC profiles - WIndows
www.adobe.com/...
ICC profiles - Mac
adobe-icc-prof...
Inkscape/Scribus Guide
www.klaasnotfo...