New to portrait photography. Need advice on equipment.

[NJMAN]

Hi all,

I am new to portrait photography, and I want to make the most out of a natural light studio I am setting up. Where can I go to find the best deals (new or used) for portrait photography equipment, such as 1) a 45 inch westcott umbrella, 2) an inexpensive stand for the umbrella, 3) muslin backgrounds that extend to the floor and beyond for that seamless look, and up to 10-12 feet wide, and 4) adjustable stand and crossbar for the backgrounds.

Thanks.