Need Photoshop Tutorials....

I am looking for some good references, tips or tutorials for using photoshop to bake textures and create lighting and shadowing for building prefab homes.

Also, is there any special tools for SL that helps guide you as to where to create the shadowing and lighting on the texture where needed when placing it on a prim?

Directly at the top of this forum page you might look at the first 6 threads. I believe you will find a lot of what you are asking for. Those are called stickies........they remain on page one of the forums so you can easily see them.