You can make a reservation for the DVC tour from your room at any WDW resort- there is information on CH21 on the room TV- or at any of the DVC kiosks located in every WDW resort and in all Theme Parks and DD. They will provide roundtrip transport from your resort to the tour at the BW Sales Center. Child care is also provided for the tour that will take about 90 minutes. If you have less time to spend- just let your guide know. If you have more time, you will not be rushed at all.
You can get a free video and information packet by calling 1-800-800-9100.
I'm not sure if the floorplan is available online, but you can view the <a href="http://dvc.disney.go.com/disneyvacationclub/resorts/accommodationsindex?id=BeachClubVillasAccommodationsGrp">Studio floorplan</a> by clicking on "floorplan". The floorplan is very similar to that of the BCV studios.
Here are some photos of the <a href="http://disneydoc.homestead.com/SSRModels.html">SSR Models</a>.