How to Duel
You may duel other players within Forsaken World anywhere you want to! Just right click their name and click "Duel".
A three second waiting period will commence, then its up to you to defeat your opponent.
Be wise when choosing a opponent and don't choose a level 76 if you're level 15.
There are many guides to dueling on the forums, most of them are for specific classes.
You can duel anyone. It does not matter if you win or lose, at least you tried.