1 used to ask someone if they are well and happy -- come stai?
2 used to ask about the way something happens or is done -- come
3 used to make a suggestion -- che ne dici/pensi… ?
How about going to the cinema? Che ne dici di andare al cinema?
4 a polite thing to say to someone you are meeting for the first time -- piacere (d’incontrarla)!
5 used to ask about what an experience or event was like -- come