Almost all dreams are inherently confusing and unexplainable. The mind just makes up all kinds of weird stuff while you're asleep. Most elements of most dreams are pretty meaningless. I think dream analysis is as much BS as astrology and palm reading...with the possible exception of themes that are obviously related to your real life, and even then, you don't need a dream book to figure those out. Recurring nightmares may be linked to psychological issues, but I think the interpretation of them is pretty self-evident. I dream of failing and skipping classes in school becuase I'm struggling to motivate myself to push on and finish grad school, and procrastinate like all hell. D'uh.

If you have a lot of nightmares, though, lucid dreaming and dream control might be helpful in turning those around. Since I learned how to lucid dream, I've often been able to become spontaneously lucid, or at least semi-aware and able to apply wishful thinking and get my wish to come true, during some of the scarier or less common nightmares. And confusing and unexplainable stuff can serve as dream signs, to help you become aware of the fact that you're dreaming. Bizarre things that don't even occur often in dreams are most likely to tip me off on the fact that I'm dreaming. (Lately, though, awareness of having been awake or exited a dream recently tends to be what clues me in, or first gets me suspecting.)