Is there a limit to number of events that we can post?
No, a user can post as many events as they like.
Can we delete a event?
Yes, A user can delete the event which was created by them.
Can we add custom field for the event registration form?
Yes, each event can have it's own custom field.
Where can we get the data of the registered users?
You can view all the registations on your events on the myEvents section.