Whilst it's easy to track updates in Collaborate through tasks using the my tasks app, tasks may not always be setup in relation to changes. To ensure you don't miss a thing, be sure to setup notifications for yourself:
Click your name at the top right of Access Workspace
Click My Settings
Click Notifications
Tick Collaborate to receive any kind of notification relating to Collaborate
Alternatively, you can select from any of the following to receive notifications relating to specific elements of Collaborate:
Comment Made
Document Shared
Document Version Uploaded
External Organisation User Invite to Site Revoked
External Organisation User Invited to Site
Site Comment Made
Site User Insert
Site User Invite
Task Owner Insert
Task Status Changed
User Added to Task
5. Click Save.