I thought lynda.com had tutorials for all software but apparently not.
Still, her offerings are very worthwhile.
Here's the link... http://www.lynda.com

Chris Orwig has two fine tutorials (Photoshop CS4: Image Compositing
for Photographers and Photoshop CS5: Creative Compositing) on
http://www.lynda.com on photo compositing .
Primarily Chris is a photographer.
Though his tutorial at lynda.com is using Photoshop, the concepts are
universal to photo manipulation/imaging software.
This is a very short bio on Chris: http://www.framedshow.com/archives/1846
This link is an hour long interview on YouTube:
http://www.youtube.com/watch?v=PXQLx5krblI

Deke McClelland's blog another fine Photoshop and Photoshop Elements master -
http://www.deke.com/dekeblog

A listing of Photoshop compositing tutorials from Photoshop.com
http://www.photoshop.com/tutorials?keywords=compositing

Digital Photo Buzz blog
http://digitalphotobuzz.com/digital-composite-photos-and-art

Lou Oates
http://www.pixiport.com/Gallery-E92.htm

Various Composite artist's fine art for sale
http://fineartamerica.com/art/all/digital+composite+art/all

Wesley Smith composite fine artist
http://www.wesssmith.com/gallery-contemporary-fine-art/

Wikipedia page on Photomontage with several links to more material
http://en.wikipedia.org/wiki/Photomontage

How to Composite Images with Paint Shop Pro
http://www.ehow.com/how_2086468_composite-images-paint-shop-pro.html

Gimp (A free photo editor that can be downloaded from the 'net)
How to Create a Photomontage in Gimp
http://emptyeasel.com/2008/08/29/how-to-create-a-photomontage-in-gimp/

GimpTalk
http://www.gimptalk.com/index.php?/forum/48-gimp-art-galleries-and-resources/

YouTube Gimp creating a photomontage tutorial
http://www.youtube.com/watch?v=XNmcpV0fTkE

YouTube Paint Shop Pro collage tutorial
http://www.youtube.com/watch?v=8xI7tRnHFRo


Any questions? Email joe.nobiling@gmail.com