Thanks! Well certainly if you are looking for models, the two easiest places to find them are on Facebook and on Model Mayhem.
FB has numerous modeling forums, several for each state. Some are generalized, others more specific in nature; fine art, tattoos, etc. I get a lot of my models from posting messages, or just showing my own photos. There's no shortage of models just starting out that will work totally for free, or for very modest modeling fees.
Another great source is Model Mayhem: http://www.modelmayhem.com
In addition to being able to post specific castings, you can also search for models by location. So for examples, when I'm travelling to another city, I can let models know I'm coming there and find out who would like to work with me.
Those are the two main methods I use to find models. If I can provide further info, don't hesitate to ask. :-)