CANT FIND ANY DEMO

i cant find any demo when i install UNITY i dont know why please tell me how to open the demo

In Unity, choose File -> Open Project, then choose the right folder. I don't have Windows, but a quick search of the internet says it is here:

Windows 7/Vista: C:\User\Public\Public Documents\Unity Projects\Bootcamp Demo

Windows XP: C:\Documents and Settings\All Users\Documents\Unity Projects\Bootcamp Demo