Here we will see how to create several versions of a product. The customer can then select the one they want from a drop-down list. The product price and images will also be updated:
Click on Catalog and then on Attributes and Values.
Let's start by adding an attribute. Click on Add new Attributes and type in the name of your attributes group. In my case, T-shirt styles.
Notice you have the option to enter a different public name. So you could call your attribute group something different in the admin and shop fronts. If this is important, perhaps to avoid using overly technical terms, then do so. If possible, I would keep them the same to avoid confusion.
Click on Save when you're ready.
Next click on Add new value. I will be adding my first T-shirt style—Karate. Then Save it. Keep adding attribute values from different groups until you have added all that you need.
The color checkbox gives you the facility to provide actual colors, not just descriptions...