It took me a few year before I get really conformable with OS X. I had to do some trial and error with my first Mac, 550 MHz Ti PowerBook. Now, I am very comfortable with my Mac. I have Mac OS X Tiger Edition Bible. I also read the missing manual Apple Script, learning Unix for Mac OS X Tiger, and other magazines in print
and online. I think there is no silver bullet you can nail OS X to your submission. But those books helped me understand OS X better.