I often create short videos for my clients when I build them a website to teach them how to do simple things so they don’t have to “bother” me (it’s not a bother but they always feel like they’re bothering me!) to do it for them.
Vidyard is the tool I use (link in the comments).
Which is a browser extension (Chrome, Firefox, and I think there’s one for Safari as well). All you do it click the little Vidyard button on your browser’s toolbar, tell it what you want to capture and hit record.
Then, you do your thing and when you’re done, hit stop! It’ll prepare the video for you and copy the URL to your clipboard so you can share it.
Super easy! And the base extension is free. No time limits on the video length, either!