There are several ways to zoom in and out of your spreadsheet in Excel:

Using the Zoom Slider:

1. Locate the zoom slider on the status bar at the bottom right corner of your Excel window.
2. Click and drag the slider to the left to zoom out (see less data) or to the right to zoom in (see more data).
3. You can also click the plus (+) or minus (-) buttons next to the slider for smaller zoom adjustments.

Using the View Ribbon:

1. Go to the View tab on the Excel ribbon.
2. In the Zoom group, you'll find several options:
- Zoom: Click this button and enter a specific zoom percentage (between 10% and 400%) in the box. Click OK to apply.
- Zoom to 100%: Click this button to set the zoom level to 100%, showing the entire worksheet on your screen.
- Zoom to Selection: Select a specific range of cells you want to focus on. Click this button to zoom in and only show the selected area.

Using Keyboard Shortcuts:

- Hold the Ctrl key on your keyboard.
- To zoom in, use the scroll wheel on your mouse and roll it upwards.
- To zoom out, use the scroll wheel and roll it downwards.

Tips:

- For smoother zooming, especially when zoomed in close, make sure to click on a cell (like cell A1) before using the Ctrl and scroll wheel method.
- You can customize your zoom settings by going to File > Options > Advanced. Look for the "Zoom on roll with IntelliMouse" option under the "Display" section.