RepRap and the wider 3D printing and making community - links and useful info - If you find something you think should be added to this list, please let me know.
Forums, groups and Wiki's
The RepRap Wiki is the best place to start.
And the RepRap Forum
eMaker Forum
Mendel-Parts Forum
Ultimaker Wiki
Fab@home
Fab@home Wiki
Fab@home Forum
Makerbot Wiki
Thingiverse Google groups 3D printing community
Flickr RepRap Group
Flickr Art of Printing failure Group
Lab's, Master-Classes and Organisations
The Digital Manufacturing Lab - 3D printing powered by RepRap
UK Hackerspace and a list of worldwide Hackerspaces
FabLab foundation
FabLab (Manchester)
Make It
RepRap build resources
Build your own 3D printer - This is an awesome book by Steven Devijver, Please take a look especially if you are just starting out.
And Take a look at the Great visual build instructions by Gary Hodgson for Prusa mendel
A must read are the blogs by Nophead and Forrest Higgs (Older- history) Forrest Higgs (Recent)
Gary Hodgson has also done handy books based on the development history from Nophead and Forrest here
3D models and digital design
Thingiverse
3D printing Event - Show in Europe