There are a few ways to select non-adjacent cells in Excel. One way is to use the mouse to draw a selection rectangle around the cells you want to select. Another way is to use the keyboard shortcuts Ctrl+Click to select a single cell, or Shift+Click to select a range of cells. Another way to select non-adjacent cells is to use the Excel's "find and select" tool. To do this, go to the "Home" tab and click on the "Find & Select" button. Then, click on the "Find" tab and select "Go To Special." In the "Go To Special" window, select "Non-adjacent cells" and click "OK." This will open a new window with a list of all the non-adjacent cells in your spreadsheet. You can then select the cells you want to select and click "OK."