Nice to see the library brought back in some kind of way for tech companies.<p>15 years ago, <i>most</i> tech companies had a library of sorts because it was <i>required</i>. Sure, there were manuals online, but they didn't offer the depth available in books at the time.<p>Stack Overflow either didn't exist or was in its infancy, so your options were to either find an O'Reilly book on the subject[0], hop in a Freenode channel on IRC and talk to folks who were in the weeds (or even the maintainers themselves), or you had to use mailing lists.<p>[0] - okay, not all of the books were O'Reilly but a huge number of them around that time period were