I've written a lot of tutorials about storyboard and collage design. Here they are in roughly the right order for learning from the ground up:
Introduction to the basics of design.
Designs featuring two or more photos.
Getting a bit more creative with layouts.
Simple method for an eye-catching design element.
This is so much fun!
How to make a wave-shaped box in Photoshop
And here are some general articles about templates, web images and design elements:
Loading ... please wait ...
If you have questions about these articles, please feel free to post in Ask Damien.