I've never written anything remotely resembling a novel before, but at lunchtime today, whilst driving home from work, the germ of an idea has inserted itself into my brain. I have the basic starting point, and a rough outline for the first chapter and half a dozen characters, but that's it. Not a clue where it goes from there. Do I just put pen to paper and see where it takes me? Do I let it float around in my head for a while? Do I think of the end, and then figure out the middle afterwards?
How do you take an idea and expand it into something resembling a story? Any advice or hints would be much appreciated.