Proper use of shadows and lightings Adobe Photoshop / Photography
Shadows add facet and meaning to an image. Without shadows the object may appear plain and boring. Lights and shadows establish the correlation of one object to another and their place in the full scene.
Projected Shadows Adobe Photoshop / Photo Retouch
Obtaining a good shot of a shadow interacting with your subject can be difficult, especially considering that you can cast shadows too, making interference a very real and annoying issue. But why spend hours frustrated by nature's own little lighting problems when you can simply take any shot you like and add your shadows later?
Drop Shadows Adobe Photoshop / Getting Started
This is a basic tutorial that will teach you several ways to make a drop shadow in Photoshop. Even though drop shadows are very simple, you'll most likely find that you will end up using them quite a bit in your work.
Animated Tesla Adobe Photoshop / Animation
Learn how to make an animated effect where lightening flashes between two nodes. One of the flashes of lightning has your name, or whatever words you want inside.