Ok part 2...
Hopefully you can now make a 2d vertical plan of a house. Using these objects it's easy to pick them up and drag them around to work out how many floors you want to build and what you want each room for.
Now the trickier part making it 3d.
Click on your square and on the "format" tab select "shape effects" go to the bottom and select 3-d rotation - parallel. Then "shape effects" - bevel - bevel (I click on the first bevel icon)
Then "shape effects" - bevel - 3d options. This opens up a new window called format shape. Altering the settings in this window is how I turned my square into a 3d outline.
For a 3d box with a square front eg 2 windows I used the following settings
bevel : top width 0pt, height 5pt
: bottom width 0pt, height 97pt
depth : 11pt
contour : size 0pt
Surface : material - wireframe for outline or translucent for coloured
lighting : neutral - soft
Once you've altered the settings for one box just copy and paste this object to have loads of room boxes. Use the same settings for to make one door wall into a box as well and then just drag them around the page till you've got them stacked up in any design you like!
Well I hope you managed to follow all this and that it helps