Unsure if has been mentioned, but Ken with Blue Iris does live webinars which are saved to YouTube. They are recent such as a week ago.
blueirissoftware.com
Pretty indepth videos, too. Not your typical 3 minute ones but instead are hour or so long sometimes.
Friday Webinar Series - Blue Iris Software
If you haven’t heard, we are hosting webinars that cover major Blue Iris features and functionality. Join us if you can this Friday: https://mailchi.mp/b23653a2f325/introducing-friday-quick-start-webinar-series-12067856 You will find the webinars archived on our new YouTube channel as well...

Pretty indepth videos, too. Not your typical 3 minute ones but instead are hour or so long sometimes.