Pillars of Islam

I have recently been enlightend upon the relgion of islam. please inform me what is the significance of the hajj for both the individual and the muslim community and why?

Pilgrims travel to the sacred sites in Saudi Arabia to perform Hajj. Please, enlighten me as to the ethics and significance of this Islamic rite.

assalam alaykum, Dear Ssheikh, I have two questions: (a)who is a muslim. (b)a non praying muslim is a kufar, does he need to make another shahada if he is to start praying and doing good deed again.