I got served with paperwork stating that my son’s father intends to go for full custody. Now I don’t mind representing myself in these matters but I need a Women’s Center or some place that can offer me some kind of direction in these legal matters.

Are you meaning pro bono? I live in Seattle, but what I would do if I was in your situation is call the Arizona State Bar Association. I’m sure Arizona offers such thing, but it would have to be backed by the Bar… That would be my first option…