To add superscript or subscript to your Microsoft Excel sheets just follow these steps. You can apply this to individual characters or the entire cell.
Excel
Excel: How to change the background color based on the cell value
Especially for huge MS Excel tables, it is helpful to mark cells with colors, if they contain a certain value.
How to find and replace: A Guide for Word, Excel and Google Docs
By using the find and replace feature, you can quickly search certain words in your document and make changes to them.