You could watch the Aloha clinic 2013 video on kicks:
http://youtu.be/64K5XY4JgzYOr the 2012 video on scrimmage kicks:
http://youtu.be/5AzA_1bu78wBut you won't see much about PSK, which concerns enforcement, not calling fouls. Videos are mainly useful for clarifying when to call, not for learning about enforcement.
To understand PSK, you must know the 5 conditions that apply. Once you know those, and you know the definition of "end of the kick," or the PSK enforcement spot, you'll have it.