Printing & Prepress Basics - Vectortuts+
http://vector.tutsplus.com/tutorials/designing/printing-prepress-basics/
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Explains printing prepress basics10 Pre-Press Tips For Perfect Print Publishing « Smashing Magazine
A lot of designers think CMYK is the way to go when designing for print. We will, of course, always use CMYK-based ink, but this does not mean you have to work with CMYK files. You can work with RGB images to perfectly optimize your print colors and save a great deal of time in the process.