HOW DO I GET MY INBOX TO PUT THE NEWEST EMAILS AT THE TOP OF MY INBOX?

It sounds like you accidentally turned on Message Threading. Check out the settings at menu option <View | Sort By> and pick the options you want (probably "Unthreaded" in this case. If the menu is hidden, press <Alt> or <F10> to reveal it. Those options are also available at the Message List Display Options button to the right of the Quick Filter button.

On the line at the top of the program it has file, edit, view, etc. Under "view" I found "sort by" and it showed 3 options: threaded , unthreaded and group by sort. I checked unthreaded, but it still is messing up. Under "view" I also found "threads" which shows: all unread, threads with unread, watched threads with unread, ignored threads, expand all threads, collapse all threads. I really do appreciate your help on this. I hope you can think of something. sf

There are a number of threading options and a number of combinations of options that have different results. This article goes into better detail than I can:

https://support.mozilla.org/en-US/kb/message-threading-thunderbird

Let me know how it goes.

Thank you, so much, Linn. I can't get anything to work in the "thread" department. I've actually push and marked so many buttons and boxes I think I've messed up really good now. I'm just going to have to live with it. THANKS!