Assuming you would like tips on how to always open Excel at 100% zoom:

1. Open Microsoft Excel.
2. Click on the File tab in the upper left-hand corner.
3. Click Options at the bottom of the menu.
4. Click Advanced, located in the left column of options.

5. Scroll down to the "Display" section. In the "Zoom on open" drop-down menu, select "100%". This will ensure that every time you open an Excel document, it will automatically be set to 100% zoom.

6. Click "OK". Your changes will be saved and applied automatically.