Thanks Jenny. I'll take a look at your links.
There were a lot of new email messages that I received (showing in my other email) that were not showing in Thunderbird. Only what was there when I closed it yesterday. No new stuff.
Yeah, that set up is a little beyond something I want to deal with. Also, what showed on screen when I downloaded was not the same as the pictures in the link for how to set it up.
I think I might not have checked the box to remember my password since I wasn't sure about using the email and that may be why new emails didn't download.
I'll just stick with what I have, but thank you very, very much for providing all the links and information so I could take a look.