Questions about Pose Library

Can anyone recommend a good tutorial on using the Pose Library? And is the Pose Library in actuality a place to store poses, that can be recalled and automatically set on demand? For example, can you load a “standard,” keyframe pose for a character midway through a motion? Like part way through a leaping or throwing sequence?

Thanks!

The Pose Library panel is used to save, apply, and manage different armature poses.
http://wiki.blender.org/index.php/Doc:2.6/Manual/Rigging/Posing/Pose_Library

https://www.youtube.com/results?search_query=blender+pose+library