Each Excel file is a workbook that can hold many worksheets:
Worksheets are a grid of columns (designated by letters at the top of the worksheet) and rows (designated by numbers running down the side of the worksheet). The intersection of a column and a row is called a cell—and each cell on the spreadsheet is referenced by the column letter followed by the row number that it falls within:
Cells are where you input all of your data (text, numbers, formulas, functions, etc.). To enter data into a cell, you just click on a cell to ‘select’ it (when you do this the cell will show a green border around it) and begin typing. Don’t worry about looking for any kind of typing cursor—once you click on a cell and see the green border around it, that’s when you can start typing:
Selecting a cell will also show you the details of a cell’s contents up in the formula bar. Like the example below, we see that the ‘32’ inside of cell A1 came from adding a bunch of numbers together (rather than just the number ‘32’ entered manually).
You can also type directly in the formula bar itself rather than the cell! As long as the cell you want to type in is selected, you can start typing either within the cell itself or up in the roomier formula bar: