Through mutation, DNA information evolved along with life forms, until brains evolved. Then, brain-useable information evolved. The most clear cases of information involve some sort of encoding onto the vehicle, and later, decoding for retrieval and use. The code for written languages, such as English, involves the symbols of letters and words. The code for computers is in the symbols of binary machine language.
Interpretation takes place when brain-useable information is decoded.
A book may be said to embody information, but no two readers get exactly the same meaning from the book, because their mental models for the symbols used, the words, are not identical. A brain can interpret anything that its senses perceive, even things that are not strictly vehicles for information, and by interpreting them can create information about them, which can then be recorded in memory, or transmitted. An image of structures in space might inspire an astronomer to create information about the universe, which he could then put into words, write down, and transmit to others. The words, in whatever vehicle they are presented, would be examples of information. The image, however, is not necessarily a vehicle of information.