Your Ellipsis Education Canvas account will be a separate account from any other LMS account you are currently using.
This is true for all learning management systems, including any existing Canvas accounts you may use at your school. You will have a separate username (your email) and password to access your Ellipsis Education Canvas account.
However, there are various ways to share resources and links from the Ellipsis Education curriculum with your students using your current LMS. For more specific information, see this blog post addressing how to integrate Ellipsis Education with some of the most commonly used learning management systems.