Character Creation for Daz Studio

ArtXtreme101

Hey all, so I want to try to get into character creation and create something like this: http://www.renderosity.com/mod/bcs/the-metropolitan-collection---rio-for-v4-2/78614

I was wondering if anyone had any advice or techniques or ideas. I am totally new to this and all the help I can get would be great. The gear I have is: Photoshop, DAZ Studio, Hexagon, and GIMP.