@darylo Thanks! It's been a great learning experience, though today, I somehow had a photo disappear, and it took me a half hour to do a bunch of workarounds to recover it. So at the moment, I'm totally frustrated, but know it will be fine. Rebooted, started over, found the photo though LR couldn't read it. Made a copy, and the copy made LR happy for importing. All very mystical!
@taffy I'm so afraid I don't even know where half my stuff is because my backup of a failed computer is now on an external drive that had the backup and it died. I want to start all over, but I am afraid of losing so much of the stuff I worked hours on!