Most loosely, you could probably describe OnlineCulture as any culture in a global, technological, futurist context. However, that is really false. Most online culture is American or Japanese or Chinese, and they don't mix very well.
To learn about hackers', on-line and system administrators' (and monkey pants!) culture:
You might also want to take a look at ESR's Homesteading The Noosphere http://fringe.davesource.com/Fringe/Computers/Philosophy/Homesteading_The_Noosphere/homesteading.html
We should probably move those lists to indices that are better suited, like the MeatballBibliography for the books. Various RFCs are linkable within MeatballWiki directly, ala RFC 42. However, it's best to put those RFCs in context of what they are explaining by linking them from an appropriate page like UniformResourceIdentifier.
A few RFCs are very cultural, but mea culpa I do not have references handy.