The user-specific Change Logs allow you to quickly view any system changes that directly impact you or your organization.
To view a new Change Log, click the "Collaboration" icon in the top-right corner of your screen, then click on "new change log" in the drop-down.

Click on your name in the upper-right corner of the page, then select "Manage" in the Personal drop-down.

Click "Change Log" in the Navigation section.
Click the "View" (eye) icon in the Actions column of the Change Logs table to view the change log information.

You can toggle between "New" and "Viewed" Change Logs at the top of the table.