To learn more about the Incas, check out these sites and sources:

http://www.crystalinks.com/incan.html

http://lsa.colorado.edu/~lsa/texts/Incas.html

http://www.internet-at-work.com/hos_mcgrane/inca/eg_inca_menu1.html

http://www.kidskonnect.com/AncientInca/AncientIncaHome.html

http://www.millville.org/Workshops_F/Acker_Inca/www%20Inca%20Lesson.html

http://www.lost-civilizations.net/inca-civilization.html

http://www.oocities.org/architecture_aztec_america/america_inca_1.htm

http://encarta.msn.com/encyclopedia_761560004/Inca_Empire.html

Other Topics:

Machu Picchu:

http://www.wonder-okinawa.jp/024/english/shinden/kame/macyupic/index.html

http://www.ifip.com/Machupijchu1.htm

http://www.machupicchu.org/

http://www.crystalinks.com/machu.html