Activities API navigation image description 

This image identifies the order in which to access the resources. It begins with the Service document. From the service document, you can access the feeds (all except the History list). From each feed, you can access an activity. From the Activity resource, you can access any of the following resources: History list, Activity node list, or ACL list. From the Activity node list, you can access the Activity node. From the ACL list, you can access the ACL node.