Greetings
Man greeting Man - Men shake hands when greeting one another and maintain direct eye contact. At a first meeting a warm handshake will suffice and is sometimes combined with slight touches on the arms and/or elbows. Handshakes may linger a bit. Good friends and family may engage in a light hug. A fist to fist style of handshake is common for younger men.
Woman greeting Woman- At a first meeting, women generally shake hands. Friends and close acquaintances may share a light hug with a kiss on the cheek.
Man greeting Woman- At a first meeting a regular handshake will do.
NOTE: A kissing/sucking sound is often made when someone is trying to get your attention. It is most commonly heard from men directed toward women.