go for a hairdresser..... or a friend who is a hairdresser... or a friend who doesn't mind helping you out
it all depends on what you want done. mine's been black for the past three years (normally i'm this horrible grey brown thing colour), and for a while it was red. it's easy enough once you get used to it. mine gets dyed from stuff you can buy in the shops, but my gf does the dying for me.
it takes about half an hour to do..
oh and you can get bleach from boots if you want to do it yourself - how long is your hair though? if its short it will be as easy as washing it, but if its long, you better go to the hairdressers!
P
PS: you have to check to see if you are allergic to it before you use it, by putting a bit of the developing lotion behind your ear for 48 hours before you try and use it