Years ago when I was learning Excel I used the Little Professor CD's to teach me. I found them very thorough and easy to use. This was back when they were on CD's. I searched Amazon and came up with this. If you scroll down to the bottom it shows a list of what you learn when you take the course. Looks like it is a downloaded program now. Worth a try. Not very expensive
Amazon.com: Professor Teaches Excel 2016 [Download]: Software