Hello Mouhamad,
I'm not aware of
any "Learn ColorDirector from Scratch" type courses. Udemy doesn't appear to offer what you seek.
Dave's suggestion of beginning with basic tutorials makes the best sense to me. When I'm trying to learn something new like that, I start with the most basic functions of the software.
e.g. with CDR, I'd start by practising basic adjustments, applying LUTs, creating presets etc.
Also, much of the
theory &
practice of colour grading and video colour adjustment is consistent across all software, so that reading/viewing a tutorial called "Colour Grading Essentials" that uses DaVinci Resolve would be useful for a CDR user, even though the GUI & functionality is different.
PIX
PIX YouTube channel