In ancient societies symbols found in Nature are called Omens or Signs. They are really symbolic interpretations of natural events. Or they are are meaningful information about the past, present, or future that comes from "seemingly" random events or sources.
The ancient Chinese examined bumps on a persons head or cracks in the shoulder blades of sheep for omens. The Greeks and Romans studied entrails of slaughtered animals. The Persians looked at fire.
Today's typical scientist gets all hot and bothered about these types of practices, because of course it doesn't make any sense from a first level point of view. They argue, "How can there be any correlation between events widely separated in time, space and essential nature?"
You might as well take psychological counseling from the patterns of rain on a windowpane. But from a second level point of view, any one of these methods could work.
That's because of the first-principle idea that life is a dream, and the second-principle idea that everything is connected. With his idea of synchronicity Carl Jung came close to explaining the effectiveness of the I Ching, but synchronicity is just another world for coincidence.
Shamanism says the methods already mentioned will work because everything is related. But some things are easier to interpret than others.
Omens are all around us, because our thoughts are all around us. That is, everything around us is a reflection or symbol of our thoughts. By paying more attention to the patterns in our environment, we may be able to understand the patterns of our thought better.
There are innumerable ways to seek and read omens. The only difference between natural symbols and casting techniques, such as the runes, is that we are purposely creating symbols with casting techniques. And with natural symbols we are looking for symbols that already exist.
Bibliomancy is the art of randomly opening a book and getting the answer to a question. It is mostly used with the Bible or a dictionary, but an enjoyable and creative variation is to use any kind of book or magazine picked at random.
The second thing you can do is to ask the Universe a question about your life or your career and then go out into the world with an open expectant attitude. The omen will come; something you experience will seem significant.
It might come in the shape of clouds, the shape of spaces between things (like tree branches), an object you notice, in a song, a conversation or a billboard. But it will come to you.
Brightest of Blessings,