Those would be in the Tray folder.
You can just turn off the lessons or put some other files back
Here's a little overview on what files are what
Did you try moving the saves from the one that has the saves to the one that has the ones form today and see if they show up then ?
Do make a backup before testing stuff.
To make sure I didn't lose them I just copied and pasted them into the folder with the saves from today, and launched the game. As soon as it loaded into the world my saves were still there (it brought up the moving in tutorial but I disregarded it). None of my stuff is in my gallery though, which files do I move where to get that back?
Those would be in the Tray folder.
You can just turn off the lessons or put some other files back
Here's a little overview on what files are what
