Newted Community The home away from home for Newton users around the world. Bleeding green since 1999. That's how they would describe it, I would also add that it's updated regularly, has a great forum, and is a great site to visit on a regular basis. http://newted.dyndns.org/
Newton FAQ Home to the answers that all Newton owners must ask at some point. If you have any general or not-so-general questions, this should be the first place to check. http://www.chuma.org/newton/faq/index.html
UNNA's Programming Resources Here's where it all begins, get NTK (Newton Tool Kit) and start developing. http://www.unna.org/unna/development/NewtonDev/