Deanne

the first two can be, but i don’t recommend trisquel to those coming from windows

rust in peace

screensharing with sound works well, been using this since the past weeks

yes

start with i3wm/sway or openbox. openbox is a floating window manager so it should be more familiar and i3wm is a tiling window manager. personally i use kde nowadays but i always preferred tiling window managers when i chose to use one. it all comes down to your choices so first see if you prefer tiling or floating window managers and then go from there

heroic games launcher works just fine

with this pace of growth i wouldn’t blame them if they got advertisements. and i believe that most people here use adblock anyway