1) I give a bit of a rudimentary dfinition of the 3 major RGB color spaces.
2) Why I have decided that ProPhoto is my choice (but Adobe RGB isn’t too bad).
3) How to set the Color Preferences in Lightroom, ACR, and Photoshop.
If you want to skip the Color Space definitions and get to the meat.
Changing Preferences in :
Photoshop CS, CC 7:17