A free ebook is available at PhotoNaturalist.net that provides some great tips on photographing dragonflies. No information is required to download this 18-page book.
Expensive cameras are not required. The tips apply to both point and shoot as well as DSLR cameras. Even if you don’t specialize in photographing dragonflies, the ebook provides tips that can be used for other subjects.
If you are a hiker who enjoys photographing nature, get your copy at http://photonaturalist.net/how-to-photograph-dragonflies-free-ebook.