Another hair trick: How to do beachy waves in less than 5 minutes: Divide your hair into two parts. Twist each section and tie with a hair tie. Run your straighter/flat iron over both of the twist a few times. Untie twists, and you're done.
Medium length hairstyles can be cute pulled up or let down. Find pictures, video, and articles about medium length hair styles here. You can also contribute your own pictures of medium length hairstyles, and read about other users' experiences.