# Join a course

Nuvolos is an invitation-based system. A course is always created by one user and until invitations are made and accepted, no other users have access. Additional instructors can join a course only by invitation. To accept an invitation, follow these steps:

1. Open the invitation email.
2. Click **Review Invitation** in the email.
3. Review the roles included in the invitation to make sure they are appropriate for an instructor.
4. If you do not already have a Nuvolos account, complete the sign-up process.
5. Click Accept Invitation.

If you are signing up for Nuvolos for the first time, the process may take up to a minute to complete.

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When accepting the invitation, we encourage you to proceed with the recommended option for your institution (e.g., SWITCH for Swiss higher education institutions).
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