This is article is on best selling author Scott Berkum’s blog . In short it’s excellent:

Every author I know gets asked the same question: How do you write a book?…

Here’s the short honest truth: 20% of the people who ask me are hoping to hear this – Anyone can write a book. They want permission. Truth is you don’t need any. There is no license required. No test to take…

Being famous and wealthy: Now this is the kicker. About 50% of the time the real thing people want to know is how to become a famous millionaire rock-star author dude. As if a) I qualified, b) I could explain how it happened, or c) I’d be willing to tell.

Read the entire article at Scott’s blog