What should I set up first?

Your setup guide lists three steps. It ticks each one off as you finish it.

Setup guide, 1 of 3 steps done

Add a property. Everything in Roofteller is organised by property, from accounts to rent to your books.
Set up a banking account. Apply once, and after you're verified you can open as many accounts as you need. Each account can be linked to a property.
Invite a teammate. Bring in a business partner, property manager or bookkeeper, each with their own login. Team access is part of Pro.

Two optional steps sit below these:

Import your transactions from a CSV, so your books and reports start with your full history.
Download the Roofteller mobile app to check balances, send money and capture receipts from your phone.

You'll find the setup guide in your sidebar. Once you've added a property and your banking is done, you can hide it with Hide setup guide.