If you're currently not using shortcuts in your application you are definately missing out. Now I know that it takes effort to learn and use shortcuts but the effort is worth it, and for the following reasons:
With this Google Sheets tutorial you will see how to use keyboard shortcuts to not only insert, but also remove rows and columns within your spreadsheet. Along with the above you will also see how to access a list of shortcuts within Google Sheets and get an idea of how to use them.
In this Google Sheets Keyboard shortcuts tutorial you will learn:
There are no exercise files that accompany this tutorial however you may be interested in the following Google Sheets Tutorials.