i've been working on my main project for a couple of years and it STILL doesn't have a title! none of my projects do, i just label them with descriptions or main characters names.
as far as planning, if this is your first go at writing a book i would suggest picking up one of the many writing books that are on the market. i think they can really help when you're starting out and trying to find your feet.
here's a link to heaps of books recommended by Writers Digest.
Writers Digest