As long as my grandsons have known me, I've had a camera in my hand more often than not. I may not be a pro, but taking photos is one of my favorite activities.

I like to think it's my penchant for taking pictures that encouraged my grandsons to enjoy using various cameras—from their kid camera to smartphones to my DSLR—for shooting shots around their place now and then. 

I'm pretty good about explaining to my grandsons the basics of using a camera, but as a true and untrained amateur photographer myself, I'm not the greatest at sharing with them sure-shot techniques for composition and more, in easy-to-understand snippets they'll understand and remember.

Enter National Geographic Kids book Guide To Photography by Nancy Honovich and National Geographic Photographer Annie Griffiths (which I...