I don’t do a lot of coding, but to write out any of my scripts or config files; VScodium works well enough for me.
2560x1440 and fractional scaling works for me. And even on my odd resolution 2240x1400 on my laptop it works well.
Using Pacman and Yay for AUR I have never had to dabble in adding other repos. AUR usually has anything I could want. When it doesn’t, I build it myself from source.
I’ve tried KDE, and Gnome, as well as many other desktop interfaces; but KDE always happens to be the one I go back to. Hell, I’ve even dabbled in Hyprland. I can’t say I love or hate it; it’s just got a learning curve.
But the fact that I can have many desktop environments/window ma ager installed and switch is a beautiful thing.
The reason videos aren’t recommended is because they quickly go out of date. Text is easier to update, and so are screenshots.
The wiki is the most comprehensive guide you will find.
However if you don’t know what you are looking for help on, it is best to search up what issue you are having, then consult the wiki when you learn the terminology you needed to find the page.