原來youtube就有了...@"@
https://www.youtube.com/channel/UCorqI2EE1avwlTCekjfi0LQ?sub_confirmation=1
---------------------free information--------------------------------
FreeCodeCamp
DNS：1.1.1.1
office:Libreoffice
video:shotcut
painting:krita、phtocap
image:unsplash、pixabay
streaming：OBS