Professionally, depending on your career, you might use excel to:
track inventory (all careers)
track personal vehicle loan
evaluate time commitments
track a project (business & graphic arts)

1. To track inventory on excel you should have thorough knowledge on how it is used and different techniques and buttons behave on it. Tracking inventory may use formulas for example the total amount of items sold for the specific day. So where to right formulas and how to use them should be learned.

2.Track personal loan will take a little knowledge about the tool and again here also a little amount of formulas can be used and thus will need a little knowledge that where to write them but will need less knowledge than first one.

3.Evaluation of commitments will need a very low knowledge about tool and can be used easily.

4. Track a project It also need a little knowledge about the tool and will need least knowledge if compared with other options.

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