To insert a new column, left-click in a column to the left of the column where you want to insert a new column.
Click on the ‘Home’ tab
Click on the ‘Insert’ command
Click on the down arrow next to the ‘Insert’ command
A drop down box will appear
When it does click on the ‘Insert Sheet Columns’ command
Excel will insert a new column for you.
Lesson 19: How to insert a cell or range