Three-act plotting template. Remember learning in school that all stories should have a beginning, middle, and end? This classic, logical method of storytelling takes you from your story's initial setup and inciting incident through rising action, turning points, and resolution.
Snowflake method checklist. Maybe you'd rather work from the top down than from the ground up. Inspired by fractal geometry (really!), Randy Ingermanson's "snowflake method" grows an entire novel from a single sentence. Each step of the process methodically expands upon the one before, filling in detail until you have a complete draft.