"I make short spreadsheet tutorials for people who were told they are not numbers people.
Most of what stops people is one belief picked up years ago, that formulas are for trained people and one wrong click breaks the sheet. Neither is true, and the videos show it click by click.
The free cheat sheets on this site come straight from the videos, with sample data to try them on. Take one, open it beside your own sheet, and work through it in a minute."