Cornell's Digital Imaging Tutorial "Moving Theory Into Practice".

Everything you wanted to know about pixels, copyright, metadata, and all those fascinating and terribly boring issues you have to or should deal with in planning or considering or carrying out a digital imaging/preservation/reformatting project - for a start, anyway. Very clean, nicely presented, bite-size chunks. Highly recommended introduction. Just remember, it IS a technical subject. Understandable, but can seem tedious/academic. All this back-end work!

http://www.library.cornell.edu/preservation/tutorial/contents.html

Conway, Paul. "Digital Technology Made Simpler", from the Northeast Document Conservation Center (NEDCC) provides a higher-level overview of the issues involved. This pamphlet does a better job of introducing concepts related to digitization to a novice audience. Also freely available. I love nonprofits, libraries and the culture of sharing! (That's an interesting side issue - access to information vs. proprietary needs)

http://www.nedcc.org/plam3/tleaf54.htm