Sources of information
In order to study about the Aztec society, first of all you need to make a list of the sources of information. The documents written after the Spanish conquest in Spanish language are among the major sources of information that you can find about the society. A 12 volume ethnographic description of the Aztec society, Florentine Codex, is one of the most important documents, which was compiled by Bernardino de Sahagun.
The archaeological study of pre-Columbian Aztec civilization, conducted in the recent decades, has revealed some very important information about the Aztec society, which should help you immensely in your studies and the effort to understand the trade, culture and the social structure of the ancient civilization of that region.
The advancements of information technology in the recent years has made study and research about any topic extremely easy for us. Internet allows you to research about any topic at home, helping you save time and a lot of effort. Lots of information about the Aztec society and its traditions are available online.
Understand the Aztec writings
If you are really keen to conduct a deep and efficient study of the Aztec society, it is strongly recommended that you make efforts to understand the writings of the ancient Aztec folklore and mythology.
If you are able to understand the first hand information, you would find yourself in a much better position to appreciate the beliefs of the Aztecs, their history and their cultural traditions. This should also help you understand their religious customs and the fear of God.