Free username and password to connect

I currently download toad edge (free trailer) and I stick in this dialogue window I need any user name and password to use it.

I spent one week try please please help me

What happens when you press the Test Connection button? If you're denied connection, you'll need to visit your Database Administrator at your organization to be assigned a username and password to log into your database, and make sure you have the correct information that identifies the database.

Hi, you need to have installed database on localhost or know host, port, username/password to connect.