What happens next in this paragraph?

How to use a tiller 
Remove existing sod, plants, and weeds. 
To make the job of tilling easier and more effective, it's important to remove any grass or plants that are already growing in the soil you want to till. The purpose of tilling is to prepare the soil for new plants, so you start by removing the old growth.
Select from:
 - Skip this step if your existing sod is already exposed to sunlight and moisture. Open the sod and set it down onto the ground where it won't interfere with the tilling process.
 - The new growth should stand upright, a few inches from the remaining grass. To reposition it, raise it onto the tilling post.
 - If you can, remove existing grass by using your tiller. If you know that the plant that you want to plant is long overdue, repot the area to fit it's current growth or by pruning it.
 - Use a shovel to dig into the ground around the roots of existing plants or weeds. Start a few inches (several centimeters) away from the plant and dig in at a 45-degree angle toward the center of the roots.
Use a shovel to dig into the ground around the roots of existing plants or weeds. Start a few inches (several centimeters) away from the plant and dig in at a 45-degree angle toward the center of the roots.