Is there a page where i can find out how to say hello to people, greet

how do you greet people or reply when they say hello. i have never belong to an blog before. a page of faq's maybe. pauline:)

does anyone know of an usa trained dentist/hygenist around the area of hounslow, or Richmond on Thames, or anywhere as long as they are good. They do not have to be americans. husband had really good dentist who was indian and trained in usa. at least he says he was good. how would someone who is english know. expectation theory? :)