The LSB workgroup provides the following documentation resources:
The official home of the LSB specification is the Linux Foundation's Reference Specifications site.
There are four essential steps to making applications as portable as possible across various Linux distributions.
The LSB Navigator provides application developers with a comprehensive database of the Linux platform, including information on interfaces and commands, the state of Linux distributions currently and over time, and compatibility of various popular Linux applications with the LSB and Linux distributions.
Other articles of interest to application developers: