http://www.nintendoage.com/pub/faq/NA/nerdy_nights_out.html / http://nintendoage.com/forum/messageview.cfm?catid=22&threadid=7155
http://www.patater.com/nes-asm-tutorials

hardware:
http://electronics.stackexchange.com/questions/57857/replacing-27c256-with-28c256-how-to-wire-we
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_74843_-1 - 28C256
http://www.radioshack.com/product/index.jsp?productId=2062605 - 40 pin dip socket (you could get specific pin count from jameco, but I just clip these to size)
http://krikzz.com/forum/index.php?topic=341.45 - cic w/ avr
http://www.infiniteneslives.com/products.php - pcb, tools
http://www.retrousb.com/index.php?cPath=24 - pcb, new 'cart plastics'

tools:
http://nesdev.com/ (check out the http://nesdev.com/nesdev_weekly.zip )
http://www.nintendoage.com/forum/messageview.cfm?catid=22&threadid=32737
https://www.sparkfun.com/products/11704 - hakko fx888d - digital soldering iron
http://www.amazon.com/GQ-4X-Universal-EPROM-programmer-full/dp/B009N9HHL4 - GQ-4X usb eprom/eeprom/flash programmer

sound:
http://famitracker.com/

history:
http://colordreams.rogerdeforest.com/
http://games.greggman.com/game/programming_m_c__kids/
http://atarihq.com/tsr/special/gt.html