Hello,
Material library is great, but it could be fast&simple to get some material preset.
Ok, i have to confess, i've given a fast look at RedShift render : fast (GPU power), but not as good as Corona ;-)
But i've found that the small preset starter for materials is a great idea for beginers. (i'm 3D teacher in highschool, and sometimes it would help).
Pease have a look at the screenshot.