1. I want to know about my marriage life will it be good?
As your 7th house is posited with Ketu (South Node of the Moon) , it suppresses the 7th house and is not auspicious. Mars and Venus in the 6th house is not a good combination as well. Therefore marital happiness will depend entirely upon horoscope compatibility.
When and how I should to meet my future husband, get married.
You will know your husband before marriage. Therefore you will can be through reference or while working , socializing etc.
How many children I will have?
Jupiter – Mercury – Sun in the 5th house, indicating that you will have minimum 2 children.