On the same site I did my earlier Photoshop tutorial review on I found another quick and easy tutorial that helps you get familiar with the basics of using textures as patterns for layers.
The tutorial can be found here-
Topic: Photoshop, Web UI
Time: It took me about 25 minutes to go through the tutorial.
If you liked this Photoshop Tutorial, check out the rest of my Photoshop articles [HERE].