What do I need to buy if I want a backdrop stand and a backdrop? What kind to buy?

I would like to take some pictures at home. Just family pictures, my daughter, boyfriend and I. Nothing fancy.

I have the Nikon D7000 and I have an external flash, a diffusor, tripod and all that.

What do I need to buy to buy to set up a backdrop and a stand. And what size to buy. I want to be able to sit on the backdrop and see the backdrop on the floor and behind our backs. Any recommendations and what should prices be?

Sounds like fun! A nice backdrop will make such an improvement in the quality look of your photos. The only catch is that you can absolutely spend a fortune on that stuff! You can shop around on Ebay and find plenty of kits that include a backdrop and stands, however, the backdrop is typically only large enough for a head and shoulder shot. To get the size of backdrops like you want will require you to use a place that specializes in such things. Denny Manufacturing and Backdrop Outlet are two such places. I have a couple of backdrops that are 12 feet wide and 30 feet long. They are designed to do as you say, … Lay out onto the floor so you have a seamless background. You can also get these backdrops that are made to look like an actual room, in other words, the backdrop has a design for the "wall", then there's a "baseboard" that goes at the floor level, and then the backdrop that extends out onto the floor has the look of hardwood, or stones, or brick, or just about anything you want. It is all a one piece backdrop, but looks like a real room setting. There are also endless props and set designs that can be bought. Like I said, you can spend thousands and thousands of dollars on this kind of thing. Prices for the large backdrops are typically going to be two or three hundred dollars. The stands need to be heavy duty with a heavy duty bar that is extended across the top. The backdrop typically has an open loop in the top that the bars slides through. You can also use clamps to secure the backdrop. I do that sometimes when I know I will be using two or three different backdrops. That way I can quickly unclamp one backdrop and the one behind it is ready to use. Saves lots of time and work tearing down stands and the crossbar.

I suggest getting a neutral color for the backdrop, or at least for your first one. A shade of grey goes well with everyone and is not prone to over and underexpose in the shot.

Check these sites and determine what is best for you and your budget:

http://www.dennymfg.com/

http://www.backdropoutlet.com/

Shot taken with large black backdrop:
http://www.lightanon.com/-/lightanon/detail.asp?LID=&photoID=7759138&cat=92463

Shot taken with large grey backdrop:
http://www.lightanon.com/-/lightanon/detail.asp?LID=&photoID=6090220&cat=92463