Last year as part of the TOS Crew I wrote a review of Sarah's Wish by Jim Baumgardner. I enjoyed the writing in his book as well as through his newsletters. He's engaging and fun to read. Mr. Baumgardner has currently writing a three part "class" over at Creative Learners.
Today he is addressing how to find ideas. He'll be following this topic up with developing characters and choosing a seeing for you story.