There are quite a few great linux content creators on youtube. The Black Don, Tony (his tmux config is top notch), typecraft, Diinki, Vimjoyer (who pretty much taught me how to use NixOS completely), and Veronica Explains.

Although Veronica is unfortunately taking time off because of the comments she receives which really sucks as her videos remind me of old episodes of the Screen Savers and Call for Help.