Don't be afraid to experiment! With digital cameras, you can now store an incredible amount of photos. Try it out! Don't be afraid to set up your camera at a stream one day and play around with the effects to see what kind of photos you get. It can be a great way to learn what works, and what doesn't.
Focus on a single subject in your photographs. Pictures will work best with a single, clear point of focus. Setting up a composition that involves multiple subjects can be difficult and can result in a disorganized, cluttered frame. Having a single subject also makes setting your zoom and other settings easier.
in this video I talk about the gear needed, and settings used to photograph the milky way and night sky.