JW Library is the official application of the Jehovah’s Witnesses (JW are the initials of Jehovah Witnesses), which includes a translated version of the Bible, as well as a lot of books and pamphlets to study.How To Install Jw Library On MacInstall Jli Library On Mac ComputerInstalling an Arduino Library. This tutorial will show you how to install a library in Arduino v1.0.5 but should apply for..