This post is for the students I have in my class that are graphic designers transitioning into web designers. 
Below is a link to a tutorial on how to do layouts in photoshop. I will also find more relevant links and post them under the “Web Resources” area.
Also a couple of other articles that you will want to read:
How to transition from a graphic designer to a web designer.
How to protect your graphic designs online.
Tags: photoshop