There are a lot of people and organizations that make a living off of peoples' dreams to become a published author. There is nothing wrong with the dream, and there is nothing wrong with wanting to help people fulfill their dreams. But promises are made, by individuals and organizations, that they may not be able to deliver on. So the aspiring writer needs to use discernment when spending money on developing their trade.
One very good resource is this book: Planning out a book from front to back is not everyone's way of writing, but it is good to see how it can (and reasons why is should) be done.