Company Setup is where you'll go to set up your company's basic information such as location, phone number, email, timezone, and logo.
To get to Company Setup: Configuration->Company Setup->Company Setup
There are three sections to Company Setup. Address is the first section and this is where you'll enter your company's address, phone number, and email.
The second section is Localization which is where you can set your timezone, locale, and currency.
The third section is Logo which is where you can upload your logo into the system.