I love grey hair. In fact, my blue hair has faded to an awesome blue-ish grey tone, and I like it even more than the blue! I wish I naturally had a full head of beautiful silver hair like Carmen dell'Orefice or Kristen McMenamy. If you're not like me and dread the moment you get your first grey hair then here's my biggest piece of advice to you: DON'T PLUCK OUT YOUR GREYS.
I know it's tempting because you don't want them there but grey hair is slightly more coarse than your normal hair and plucking it doesn't mean it'll be gone forever. Instead it's going to grow back and those stubborn greys are going to stick straight out of your head making them more noticeable and unmanageable. Just let them be (I assure you nobody else notices them until you're at least 10% grey) and if they bug you that much, then it's time to start visiting your hair colorist. Or be like Carmen and other beautiful silver-haired women and embrace it. :)