OT: A good book on Applescript?

[Mark Smith]

Can anyone recommend a good book on Applescript?

Despite 10years+ experience with xTalks, I still find Applescript 
utterly impenetrable - Apples' own documentation manages to be so 
verbose and yet so abstract as to make the often-complained about 
(sometimes by me) Rev docs look brilliant. In particular, reading the 
dictionaries of applications, I feel like a 13th century peasant 
attempting to understand a technical description of a particle 
accelerator...

Thanks,

Mark