I just read the documentary film's book tittle " MAKING DOCUMENTARY FILMS AND REALITY VIDEOS " by Barry Hampe, and i'd say that book open my mind about the real definiton about documentary film. I always thought the making of documentary films is easy and simple,but after i read the book, i change my mind, it is really complex and full of specific details of many points that i never knew.
there are starting steps that we need to pay attention if we want to make a successful documentary film :
1. Good Footage
2. Idea, concept and point of view of the documentary.
3. it takes picture
4. structure.

and some people always missunderstood that a good films are depends on what kind of camera that you use ,but actually its depends on how skillful are you on handle the camera, the technique to produce wow factor on your films,yet appeal the audience. and one thing that you remember, good images just dont happen, which it means, we should really careful on starting our films with good starts and plan.
Documentary Genres :
- History And Biography
- Docudrama
- Documentaries Of behaviour
- Documentaries about emotion
in general, i would say ,this book is such a great guide book for amateur film maker like me.