The medium haircut is the most common andyou can do a lot with it. It is very popular these days, and there are lots of creatative ways to style it. It's no too long and not too short. The video below shows a curly medium length haircut. It doesnt really matter if your hair is curly straight or wavy it fits anyone in my opinion.
This video is a little lenghty but gives you a good idea for it to be curly.