Here's a couple of links I'm using for information, they're really long so just try to skim it or whatever...

http://www.mnsu.edu/emuseum/prehistory/latinamerica/south/cultures/inca.html

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

http://incas.perucultural.org.pe/english/hissurg6.htm

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

http://www.wsu.edu/~dee/CIVAMRCA/INCAS.HTM

http://library.thinkquest.org/5058/inca.htm

http://coe.fgcu.edu/students/webb/meso/inca.htm

http://members.aol.com/TeacherNet/Incas.html

I know alot of them repeat some of the same information, but alot of them have their rarities.

More to come !!