It's pretty easy to get started gardening. Follow the @gardening-trail and you can see lots of different ways to garden. The main thing is to start somewhere. If you buy a green onion, after you use the green part, put the root end in a shallow dish of water to just cover the roots.- and put that on your windowsill. And you will be gardening! You will get another smaller crop of green onion tops. And it didn't even cost you anything extra.