Hiding and unhiding columns is almost exactly the same as hiding and unhiding rows.
Let’s hide column B to see how it works.
Select the entire column by clicking on the B identifier above cell B1.
Then press Ctrl + 0 (zero). Your column will disappear.
You can also right-click and select Hide:
You’ll see that the B column is no longer listed:
To unhide, highlight the columns on either side of the hidden column and press Ctrl + Shift + 0 (zero).
Or highlight them, right-click, and select Unhide.
That’s all there is to it.
If you hide the first row, follow the same steps as listed in the previous section. Click into the cell selection box, type “A1,” and use the Format menu in the Home tab. (The keyboard shortcut isn’t as reliable as it is with hidden rows.)