I have installed the trial version of Raylectron, basically to compare it with Vray for Sketchup, the rendering program I am accustomed (and happy) with. Is there any tutorial or manual for Raylectron? And if anyone here has any experience with both Raylectron and Vray, how would they compare?

This is my favorite site for plans with many visual aids

House Plans | Floor Plans, Blueprints & Home Designs

Explore house plans, floor plans, blueprints, designs and layouts online. Free ground shipping on house plan orders. Expert support. Hot home design styles.

Eplans.com (www.eplans.com)

If you look for office furniture there is also Haworth
http://sketchup.google.com/3dwarehouse/search?uq=1115579327318854420750922&scoring=m