How to add Quests to my game ?

how to add quests to my game?

Ok. Start doing easy projects and/or tutorials on how to write scripts in Unity with either JS, boo or C#, and learn how the language works and how you can work with it.

Then when you know how to do that, start to figure out how a quest system works in a game, then design an idea on how you want YOUR quest system to work in YOUR game, and start implementing that design.

If you want some tips along the way, you can ask them here, but be more precise and add your code that you are having trouble with, to help us helping you!

Good luck!