One of the best way to learn about the setup of an external render for Blender, is to grab a full scene and take a look on how the author manage to achieve the level of realism and detail for a particular scene. If you are interested on a great example to study Blender and LuxRender, Daniel Salazar (AKA ZanQdo) just posted on the LuxRender user forums his scene called Sala, which can be downloaded by anyone for free. There are even a few images with variants of the original settings for the scene. So, don`t miss this opportunity and go there download the file!
