Rachel has attended:
Excel Introduction course
Excel Intermediate course
Formulas
How do your create formulas?
RE: Formulas
You can either type it directly in a cell and you can click on particular cells you want to include in the formula and they will automatically be added. For example, type =SUM( into a cell and then click on a number field. You will end up with something as follows:
=SUM(F17,E20)
You can also go to View and select formula bar to show the formula bar. Click on the little = sign next to the white box and you can get help with formulas. There are lots of different kinds of formulas so best to decide what you want to do and ask us.