In Microsoft Excel, selecting cells is essential for formatting, performing calculations, and organizing data. Here are different ways to select cells or ranges effectively:

 1. Select a Single Cell
   - Click on the cell you want to select.

 2. Select a Range of Cells
   - Click and drag from the starting cell to the ending cell in the range.
   - Alternatively, click the first cell, hold down the Shift key, and click the last cell in the range.

 3. Select an Entire Row
   - Click the row number on the left side of the sheet to select the entire row.
   - To select multiple rows, click and drag over the row numbers, or click the first row number, hold Shift, and click the last row number in the range.

 4. Select an Entire Column
   - Click the column letter at the top to select the entire column.
   - For multiple columns, click and drag over the column letters, or click the first column letter, hold Shift, and click the last column letter.

 5. Select the Entire Worksheet
   - Click the Select All button at the top-left corner of the sheet (the triangle between row numbers and column letters).
   - Alternatively, use the keyboard shortcut Ctrl + A (Windows) or Command + A (Mac).

 6. Select Non-Adjacent Cells or Ranges
   - Select the first cell or range.
   - Hold down Ctrl (Windows) or Command (Mac), then click other cells or drag over other ranges you want to add to the selection.

 7. Select a Large Range Using Go To
   - Click the starting cell of your range.
   - Press F5 (or Ctrl + G) to open the Go To dialog box.
   - Type the ending cell’s reference (e.g., `B1000`) in the Reference box and click OK while holding down the Shift key. Excel will select from the first cell to the ending cell.

 8. Using the Name Box to Select a Range
   - Type the range (e.g., `A1:D10`) in the Name Box (located to the left of the formula bar).
   - Press Enter to select the range instantly.

By mastering these selection techniques, you will be able to easily manage and manipulate data in Excel.