Excel skill network
excehome
Word union
And the official website of office. If you have formula parameters and explanations in your table, you can find them in the help of F 1. If you want to see specific examples, you can go to the above three nets. The video is free to download and there are many examples in it.
It is best to watch more and practice more. Collect more good information.
All three books can be downloaded, but they are all videos. The word alliance may have a lot of material, but it's just video. There are some other examples, but there are some advanced versions of the explanation.