It is true, the site has grown quite a bit to support all the ports, demos and utilities.
You might want to try using the Darkstar Roamer:
http://darkstar.puremvc.orgFor anything more than a click deep, it's really the fastest way to navigate the resources and find what you need.
Also, for the AS3 folks, there is a special landing page with key resources:
http://puremvc.org/platform/adobe-=Cliff>