Select the column or columns you want to hide
Right-click the selected column header
Click Hide
To hide non-adjacent columns, hold Ctrl and select each column before right-clicking
To use the ribbon, go to Home
Click Format
Under Visibility, choose Hide & Unhide
Click Hide Columns
To hide columns with a keyboard shortcut, select the columns and press Ctrl+0
To unhide columns, select the columns on both sides of the hidden area
Right-click the selection and click Unhide
To unhide all columns, select the entire worksheet and choose Unhide Columns