How do I install plugins for Sweet Home 3D? Is there an easy way to do that?
Plugins come as SH3P files. If you have Sweet Home 3D installed, simply double click these plugins and the software will install them accordingly.
You can find plug-ins on the SourceForge page: http://sourceforge.net/p/sweethome3d/plug-ins/
There is also a tutorial available that you can use to learn various aspects related to plugins: http://www.sweethome3d.com/pluginsUserGuide.pdf