O'Reilly Online Learning is an e-reference resource for technology and business professionals providing access to over 60,000 eBooks, videos, and tutorials featuring technology, digital media & profes... O'Reilly Online Learning is an e-reference resource for technology and business professionals providing access to over 60,000 eBooks, videos, and tutorials featuring technology, digital media & professional development topics. Also need account administration to manage the 25,000 user seats for the DAF, Army, Marine Corps, and Navy.