Not surprising, but Final Cut Pro 7 will not run on the latest macOS (10.13 High Sierra). However, the folks at Blackmagic Design created a cool tutorial on how to migrate from fp7 to Resolve 14. Don’t be afraid of nodes, they’re not that scary.
Here are some color grading tutorials for Blackmagic Design’s DaVinci Resolve. Grab the DaVici lite version, it’s free!
Davinci Resolve Lite – Introduction Tutorial:
DaVinci Resolve work flow tutorial:
Intro to Color Grading with Davinci Resolve (for Free!):