Elementary OS is beautiful, polished and easy. Maybe also check out Ubuntu Studio Edition since you do a good deal of editing? I like Pop! as well and have it on a couple of systems, but it’s nothing extremely special over others, it’s just very well-curated with regard to features and updates. They’ve tweaked a bit of stuff that’s sloppy in the main Ubuntu.

The best thing to do really is learn as you go, but definitely put some real effort into reading about the basics. The file system and the settings are both to look at first.

For good customization of your desktop if you enjoy that, go with KDE/Plasma.

You can also change later if you learn enough that you’d like to go to a more bare base system. Personally I’m on Kubuntu on my main machine but that’s only because it’s a pretty new laptop - or was when I got it - and raw Debian didn’t have the drivers yet for some of it. I’m sure by now it’s all supported and I eventually want to set aside a day to reformat and go to raw Debian. It’s my favorite distro and in the most recent version they did away with their draconic restrictions of drivers so it’s quite more accessible now.

But for a very easy and comfortable, eye-pleasing start, I’d really suggest something like ElementaryOS. It’s possibly the most beautiful looking one I’ve seen, and just jump right in and start kind of setup.

That’s my contribution to suggestions for you. Hope you make the journey easily. Linux really is phenomenal and a massive change from the disease-infested world of Windows.