As of 2015, manuals are available from T-Mobile, Sprint and LG that explain how to use the Nexus 5 and other Android Nexus devices. In some cases, the manuals are a user guide on how to use Android KitKat, and there are references to the Nexus 5.
As of 2015, the LG website contains several online PDF user manuals. There is a basic owner's manual that is a quick start guide for Android KitKat, with references in the document on how to perform an action in the Nexus 5, such as accessing the Home screen, using the "Ok Google" functionality or using widgets. This manual is also available on T-Mobile's website.
LG also offers a welcome kit manual covering topics such as activating the phone at a Sprint store and where to find online support. There are also small Web pages covering the Android device manager, Bluetooth basics, voice mail and VPN.