A series of short, to-the-point lessons about using the official database, called the WCA Registry. Your username and password for the Registry may be different than the one you use on this website. Feel free to change one or the other in your profile pages so they are both the same.
Lessons must be taken in order. Many folks run the Lessons on their phone or tablet, while logged in to the Registry on their laptop or desktop computer.
Once taken you can return to any lesson any time.