just got twitter but dont no how to use it?

[diamondgirl]

okay well i just got twitter
its under indigocharlotte feel free to follow me
and i was just wondering... if you want to say something to someone through twitter but they arnt following you how do you talk to them?
and how do you get them to follow you.
its a celeb im talking about and someone told me that you cant say things to people who arnt following you.. buton gis profile so many fans has sed stuff to him and he's replied?
some one also told me if you @(Their USERNAME not real name) and then say the message you want to say to them... they wont get that message unless theyre following YOU