Hi Sheila,
There's two main methods: Import and Backup/Restore. If both the source and destination courses are on the same site and you have permission to access both, use the import function55. If you don't have access or the course is on a different site, the Backup/Restore function142 will allow you to upload a backup file with the selected content (and users, blocks, settings, ect).
YouTube is a quick resource for step-by-step help: