CoHere is a coworking community based in Fort Collins, Colorado. They used to be very active and insightful, the last months, on the social networks. 
They just published this list of ressources for anyone interested in developping Coworking. Here is an excerpt of the post :
Instead of making you dig through the library stacks for coworking resources, I’ve compiled a list for you. Whether you’re a would-be coworking space catalyst, a coworker or simply interested in the idea of coworking, the following resources will give you a good idea about coworking, the people involved and how to get started.
- Coworking Wiki
- Coworking space directory
- Coworking visa (what it is & where you can use it)
- Coworking Google Group
- Coworking Blog
- Subscribe to the RSS
- Contribute your own coworking blog post
- Leave comments on other blog posts
- Follow #coworking on Twitter (Tip: you don’t need to be on Twitter to watch this stream of ideas, articles and conversation—simply click on that link!)
- Join the LinkedIn coworking group
- Watch must-see coworking videos
To see more ressources, read the rest of the post on CoHere’s blog
coworkingeu
jeanyveshuwart
Coworking Europe Conference | Blog 
Coworkin no profit association based in Italy – Pedemont.