Really anything that you used to (or still do) get asked frequently that can be shown in 5 minutes or less is worth doing, remember if something is a bigger task then split it up into chunks so that people can pick aspects of the process as and when they need it, for example:
“How do I get those awesome graphs that you make for the board report each month?”
Now this could be a 20+ minute proccess, you might need to logon to a platform, export all the data which could take 3 minutes to get to the export buttons, then 15 minutes to run and download and then 5 minutes to take the data and create the graphs from it.
Ideally you’d split the videos into:
Obviously you don’t need a video showing you twiddling your thumbs for 15 minutes as the data is exported, much in the same way that if you were at your desk you’d go “So we do this to export the data, then it’s going to take a little while so I’ll come back in 10/15 minutes when it’s done.”
So yeah, get Loom or CloudApp or Camtasia or Snagit or whatever and give recording your screen a try.