Run the backend and then the frontend (as described in the instructions section).
Access the frontend from a webbrowser as per the instructions provided in the instructions section.
Select a continent from the dropdown list that says "Select Continent Code".
Change the value of the limit to any number between 2 and 10 (limit is the field with the label "Number of countries:").
Voila! You'll see a list of randomly selected countries ordered by alphabetical order (the number of countries displayed will be limited by the value set in step 4).