As a newly 100% convert to the Mac, I would love to expand my knowledge of this great OS. I've read all the main books covering everything from security to Expose and now I want to get into the core of the OS. I was wondering if a good introductory book would be the O'Reilly "Learning Unix for OS X Panther"? I've read the a review or two and they say that it's a good book in general but the coverage of Fink(no clue what that is) is rather sparse. Any suggestions? Thanks!