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A GIMP Guide, but from a Photoshop User
(www.youtube.com)
The learning curve may be a bit steep. Once she started rapid clacking on keyboard and terminals and "having to setup your keyboard shortcuts" a manual unituitive move for what should be a visual intuitive interactive medium 
Depends on how much of a ""power user"" you intend to become. "User Friendly" has come to mean immediately approachable and intuitive, but "User Friendly" to someone who uses a particular program 6 hours a day every day will look like clacking on a keyboard in pretty much every case.
I found a YouTube link in your post. Here are links to the same video on alternative frontends that protect your privacy:
On the road to fully automated luxury gay space communism.
Spreading Linux propaganda since 2020
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