I would seriously suggest looking at the
Adorama Flashpoint 320A monolight from
Adorama's web site. It's a 150 watt-second flash with a 100-watt modeling lamp, a built-in umbrella mount and swivel, and comes with a 10 foot,air-cushioned light stand and an umbrella. All for $129.95. With free shipping.
Flashtubes are user-replaceable. THis is lower in cost than a 285HV,swivel mount,stand,and umbrella, and the advantage is you have a modeling light to help you learn how to position your light to get the shadow placement you want,and also so you can see if yo have catchlights in the eye where you want them.
The "Strobist" idea of using shoot-through umbrellas and battery-powered flashes is nice, but I think beginners learn better,an shoot better, using real studio lights, which are designed to accept real studio light modifiers, like grids, barn doors, and which have built-in umbrella and stand-mounting hardware. Once you learn how to really light, the strobist approach makes more sense to me. If you want to shoot seniors and kids, a 4-light system is pretty easy to use. Main light, fill light right on camera axis, a hair/separation light using a 7 inch reflector with a 20 degree grid or a 40 degree grid and a barndoor, and one light to light the background. THis requires three light stands and a backlight stand.
Avoid the majority of the
eBay junk. Four, 150 watt-second monolights is ample for a basement studio. There are other, even lower-cost ways to go at it, but for $1,000 you can build a decent studio using "real" equipment.