As you will imagine, an ecommerce website has lots of different settings available.
Things like whether you charge VAT, the email address you want to receive order notifications to, your search engine optimisation settings.
When your account is created we 'pre-populate' a lot of these settings for you, so you don't have to worry about them or can come back to them when you have more time. And other settings we get you to enter when you go through your tutorial.
All of your website's settings are accessed through the 'settings' menu (in the bottom left corner). We also split them up into sections on the menu too.
You can read more about the different types of settings available and how to manage them in the Manual.