Ancient Civilizations of the Americas 
Web Tracker on Ancient Americans
These links will give you some idea of the wealth of resources available on the Internet for the study of world history. As you visit these sites, pay special attention to how they differ from one another and from the textbook. In some cases, the wealth of detail provided on specific topics will force you to reevaluate some of the general ideas you have begun to develop.
A good overview of Aztec culture. Includes many images and even some sound clips of Aztec music. In Spanish.
Quechua Language Homepage
This page provides some basic lessons in Quechua, the language of the Inca, still spoken by around 13 million people today.
Mexico: Pre-Colonial History
A nice, brief overview, including several nice images.
The Inca Trail and Machu Picchu
This is a guided virtual "tour" along an old Inca road leading from the Inca capital of Cuzco to the famous ruins of Machu Picchu
Lords of the Earth
A number of pages dealing with several different indigenous culture groups. Lots of great images.