I just added Project Online to my Office 365 account. How do I get started using it?

If you purchased Project Online Professional, you can download the Project software to your computer.  First, navigate to the Office 365 portal and sign in.  Then click on the gear in the upper right corner and select Office 365 under Your app settings.

On that page, select software.  If Project is available to you, it will appear on the left and you just need to click install after selecting it. 

Once you’ve downloaded the software, Microsoft has an excellent Quick Start Guide that will help you begin using Project 2016.