0 in the place where you are -- qui
Come here! Vieni qui!
Does Lily live near here? Lily abita qui vicino?
1 used when saying who you are on the phone -- qui che parla (al telefono)
Hello, Jim here. Pronto, sono Jim.
2 at this point in a discussion or piece of writing -- qui, a questo punto
3 used when you are giving someone something -- ecco qua, ecco a te
4 used when you see someone or something you have been looking for or waiting for -- eccoti, eccolo, ecc.
5 in many different places -- qua e là, in varie parti