about processing
Processing is an open source programming language and environment for people who want to program images, animation, and interactions. It is an open project initiated by Ben Fry and Casey Reas, and it can be freely downloaded from www.processing.org.
OpenProcessing is a 'flickr'ish place for processing community to share their sketches, comment on each other's pieces, etc...
learning processing
You can find many tutorials and examples at the learning section of Processing. Also, these books cover all the topics for basic to advanced levels.
from the openprocessing blog
"OpenProcessing has two main focus: to get Processing community together, to share, comment and collaborate. We are already quite open-minded people, displaying our works on our websites, sharing our codes. So OpenProcessing is trying to be a common portal for this collaboration. to be a good channel of awareness of Processing, and to support the educational uses [...]" (read more...)