Over the next 7 to 10 days the yeast will do its work of converting sugars in the wort to alcohol and carbon dioxide. Place the fermenter in a cool, dark place. Total darkness isn't necessary but direct sunlight is a definite no-no. The fermentation process is fun to watch but don't be concerned if nothing appears to be happening for 12 to 24 hours. After that time you should begin to see foaming and bubbles escaping from your air lock. After 7 to 10 days the fermentable sugars should be converted by the yeast and you're ready for the next step.