Ha! I figured it out. This is not very exciting. But it is a "video". My first recording were not very good. For one thing, I can't properly hear myself with the headset on. The built-in mic works though.
Anyway, blogger seems to want to get the video from my computer.
But I did something wrong with the first one because it would not upload. I tried with Youtube, but again, it had some error in uploading. Not that I expect anyone will want to listen. They are pretty rough and perhaps not me at my best. Yet. My goodness it takes a long time to upload one from my computer — from 5:27 to 8:25. It appears to be capturing bits by the second, every second a pulse of data at the bottom of the screen and at the tab. With all the stops and starts and correction of mistakes, I have been at this since early afternoon. Still it is something I can use in other projects.
Aha! Found the error. I have to export it into a compression format using QuickTime. Oh, oh. Do it again...You're not logged in. Start again.
What a long process this has been: Audacity > export MP3 > iMovie > export QT
It takes so much patience. AND still I get an error loading it this blog.
....To be continued