Formulas

I read excel_formulas[4].pdf and finally found something worth reading:
- 3D references, although it was explained to us in class, reading about it made it very clear
- styles, even though I don't usually use them it's good to know they're there and they can be very useful with large amounts of data
- printing options, I had no idea you have to go through that much trouble in order to properly print a spreadsheet.