Image Retouching Courses
LinkedIn Learning Photoshop 2020 Essential Training: Photography
LinkedIn Learning Beginner’s Guide to Retouching Old Photographs in Adobe Photoshop
Skillshare 7 GIMP Web Design Projects - Learn GIMP Web Design By Doing
Skillshare Night Sky Photography - Milky Way and Star Trails
Skillshare Learn Photoshop in Under 2 Hours
Udemy Photoshop Retouching for Beginners
Envato Tuts+ via YouTube