What did I learn?

Thanks to Ron, I learned that "Bios is dry". (His words not mine.)
I learned the simple logic that a computer follows, via our first simple computer exercise. I re-examined my use of operating systems and found that both OS X and Windows versions 2000 and XP work for me. I found out that the different OS interfaces are all very similar, and most of the time they can be used with a little intuition and a little bit of looking around.
I also found out that I like what I do to prevent disaster on my computers. I feel that I have a solid plan. That insight might change by next class, but for now I feel good about it.
I don't know all of the individual components of what is inside of the computer case, but I know enough to get me into trouble. My husband tried to add a new DVD burner to his computer only to find that he didn't have room for the ribbon cable - there was too much already there. We talked to another techie and Arthur got himself a new connector to clip onto an existing ribbon cable. He warned me that it may take several tries and that he may need to get more ribbon cables and more clips, but it was worth a try. He clipped the ribbon cable, and it worked.
My point is, with him around and continually going into the computers to fix, repair, replace, or just play around, I already knew a lot about what was inside - I just need the actual thing in front of me to follow connections and see how everything connects and works. I do know that after this course, I feel more confident about opening a computer on my own. I'm not sure how much I would DO on my own, but I wouldn't be afraid to open it any more.