Hi,
I have one course that have n ocurrencies,
the same course I need to give n numbers of time with differents students, with new forums, etc.
How can I implement this in moodle?
Up to now I build a course, but I don't know how to make new instances of the course?
Do you want to create a completely different (like a template) course or do you want ONE course but have groups in that course so they can only see their own classmates?
I would suggest setting up groups with separate enrollment keys. Have then enroll with their enrollment key and they are automatically put in groups. This allows you to view grades per course, view activities, forums, resources, etc. by group.
In my opinion, I would use groups (with only one actual course) if the course is the exact same content and stuff for each group.