What are the requirements for membership?

The person who wants to join Masonry must be a man (it's a fraternity), sound in body and mind, who believes in God, is at least the minimum age required by Masonry in his state and has a good reputation. (Incidentally, the "sound in body" requirement -which comes from the stonemasons of the Middle ages-doesn't mean that a physically challenged man cannot be a Mason; many are).

Those are the only "formal" requirements. But there are others, not so formal. He should believe in helping others. He should believe there is more to life than pleasure and money. He should be willing to respect the opinions of others. And he should want to grow and develop as a human being.