Take a look at the recent book Sprint: http://www.goodreads.com/book/show/25814544-sprint?from_search=true&search_version=service http://www.goodreads.com/book/

Take a look at the recent book Sprint: http://www.goodreads.com/book/show/25814544-sprint?from_search=true&search_version=service http://www.goodreads.com/book/show/25814544-sprint?from_sear... It details a creative process for developing concepts and testing them. Given that the book outlines a 5-day process that is tailored for product development teams, you might get a lot out of it for personal projects.