How to build a website like http://missionsplace.com/find-a-missionary/

Help please! I need to build a website for my social work group like the one in your Sowcase http://missionsplace.com/find-a-missionary/

I have no clue about it! I buyed the Directory plugin and the CustomPress Plugin but (I'm the dumbest man in the world!) I don't really know how to proceed...

please help me!

Sean