Locality: www.locality.org.uk - A national network supporting community organisations to be strong and successful. They give out guidance to communities putting together Neighbourhood Plans.
Neighbourhood Planning Support: www.neighbourhoodplanning.org - A Neighbourhood Plan specific website provided by Locality.
Planning Help: www.planninghelp.cpre.org.uk - Information about Neighbourhood Planning from the CPRE.
Government: www.gov.uk/guidance/neighbourhood-planning--2 - All the Government information about Neighbourhood Planning, held in one place.