Gentlemen should shake hands with each other, when introduced. An old gentleman may offer his hand to any lady. The glove need not be removed from a gentleman's hand, when greeting a lady. It was formerly usual to do so, but both custom and convenience sanction its retention. It is not good form to make an apology for the omission.
Undue familiarity is evidence of coarseness.
Nicknames should not be used in public. Show others respect, and you will receive it in return. A greeting much in vogue in American and English families, is kissing. This is a reprehensible custom, and should not be tolerated in good society. The kiss is the seal of pure and earnest love, and should never be exchanged save between nearest and dearest friends and relatives.