You can track your progress on CENTURY using your personalised My Dashboard page. This page can be found by using the speedometer button on the left hand bar.
To change the course you are looking at, use the blue highlighted bar under your name.
The blue bars in the graph on the right show you how you have done across all the nuggets in that course. You can hover over the smaller bars to see which nuggets it would be good to try again.
By scrolling down your dashboard, you can identify areas for improvement and areas to stretch yourself. These can be used for independent learning. More detail on this can be found here.