November is National Novel Writing Month; or Nanowrimo, for short. You register, and are encouraged to write as much as you can by midnight, November the 30th. There is a Nanowrimo Young Writers Programme, with downloadable workbooks to help you express your inner novelist.
Kiwi Writers is a group that began from Wellington participants of the 2006 Nanowrimo; their website offers resources, links, and support for writers.
Start planning your novel now!