Dashboard
Your account homepage (also known as Dashboard) contains a list of all your website entries, including website thumbnail, subscription status, latest sitemap details and in case if sitemap update is currently in progress it will show the progress status for it.
You can click any of your those cards to proceed to this website control panel.
At the top of the list you will find a button to Add New Website Entry in your account. On the right side there is an input field that allows to quickly find specific website by its domain name or a title (which is handy with a lot websites listed).