Rich:
I believe collage crafting is a two-skill deal:
* The artistic talent to visualize the results beforehand (or as you move forward)
* Utilizing the appropriate Elements tools/techniques to achieve the vision
Most of the following covers the latter.
I did a quick google search on collage tutorials (for both Photoshop and Elements) and what I found was pretty lame. Hopefully here's some useful info:
I have an older book (written for PS4, but about 92% applicable to Elements) that covers a number of methods:
Photoshop Collage Techniques, by Gregory Cosmo Haun. ISBN: 1-56830-349-1.
It covers numerous basic Photoshop techniques (again, mostly applicable to Elements) that are used in creating collages... things like: Masking, selection, blending, feathering edges, blend modes, layers, opacities, etc. I'm pretty sure this book is out of print, but it shows up periodically at half.com, on eBay and is probably available through other used book sites.
Collage with Photoshop (ISBN: 1-56496-210-5) is another older book. It's rich on some fabulous example images (finished product), but short on a great deal of how-to detail. Despite the title, it dabbles in other applications besides Photoshop. If you can get it cheap, it's not a bad source for visual inspiration.
A very, very good site for learning basic Elements skills is:
http://www.arraich.com/elements/psE_intro.htm
This site also has gobs of Photoshop tutorials, many of which apply to Elements as well.
Finally, a tool that I believe is essential to one interested in making collages is Layer Masks. LMs aren't available with native Elements, but the functionality can be enabled if you know how. Check out Richard Lynch's site (and book), Hidden Power of Photoshop Elements, where he provides a means for doing LMs in Elements.
www.hiddenelements.com/
Hope this helps...
~Danny~