I prefer to use Enlightenment for my Desktop. But if I have to use one of the big ones I go KDE.
I am keeping my projects on Codeberg, but I still have the github account if only so I can pull from there using SSH.
Working with CSS first so I can figure out colors, fonts, and maybe see about simple CSS styling for shapes. Never know.
Pretty sure Windows and MacOS have stripped out most stylization by default. Color schemes I think are the extent to what you could do.