My son is 5 and still sleep with us. My friends keep telling me that we have to make him sleep alone. But i am confused. What will b right age to get him to sleep alone.

You can start the transition at age 6 or 7, so that when he begins primary school, he is comfortable being in his own room. Make it exciting! Put glow in the dark stickers or boy-theme wallpaper. Start with a playroom then tell him later this will be his own room, where he can be independent and sleep by himself. And don't worry so much. When the time comes, he'll be willing to move to his room (and mom will misses him too!)