Good reading resources for understanding image manipulation, colors and textures

Hello there respectful community members. Would anyone be willing to tell me what are some good prerequisites (in form of PDF books) for learning and understanding digital image manipulation, texturing and compositing? I was thinking in the line of books that teach and explain about fundamentals of colors, textures, pixels and various effects in digital art etc. I know I’m asking for too much and there’s probably a plethora of books out there regarding this subject, however I was hopping maybe someone from the community would know about few “special” books that cover exactly these topics.

I allways recommend the following two books. They are not specifically for digital work but the principles are the same:

For color and light:
Color and Light: A Guide for the Realist Painter by James Gurney

For compositing:
The Complete Photographer" by Andreas Feininger

If they are available as pdf I don´t know but you gen get them used for pretty cheap.

Thank you for your reply, I really appreciate it. Those books look like they could be a good starting point.