The left nav bar lists the resource pages migrated over from BigAdmin. We are providing access to them for the time being, but most of those pages have not been updated since the migration. Double-check the information they contain.
Select a topic, below, to see the last technical articles, blogs, videos, books, links, etc. related to that topic that were posted on the pages of the System Admin and Developer Community of OTN). Some links go to an intermediate landing page, but most go straight to the OTN section of Delicious. Not all collections available, yet.