If you are using Google Classroom, it is very easy to get your students setup in Conover Online.
First, you will need to make accounts and assignments for them in Conover Online. Check out these two articles.
How to Batch Import
How to Batch Assign
Once you have the students added and assigned, you can then add some information to Google Classroom via a Stream or Classwork to get them the link to log in. We will show you how to do this using the Stream, but doing this in Classwork is the same process.