Sagi Kalev, a personal friend and one of my trainers, is the most photographed fitness model of all time. He's an absolutely awesome guy. He owns Energy Uptown Fitness in Dallas.http://www.sagikalev.com
There are lots of details that go into photo shoots, many that probably are not best discussed in an open forum.
You can try an offshore muscle board. There are many.
My suggestion to you is to find a personal trainer there in Sioux Falls who can walk you through your first shoot.
A bodybuilding competitor will have the best overall understanding of how to get prepared. Someone like Joe Labelle from mostmuscular.com can guide you through a shoot. He has many, many, many shoots under his belt and is a real pro.