http://blog.makezine.com/volume/make-ultimate-guide-to-3d-printing/
On a side note – in his scifi book, Makers, Corey Doctorow uses the 3D printer a lot as a big part of the story line (free online or you can buy in print). I haven’t had a chance to finish it but it was pretty interesting (free download on your iPhone/iPad). Doctorow, a Canadian author believes in copyright free – hence the free availability of his works. I really liked his Little Brother book.
Hope this helps
Cheers
Cat:)