Cycles is a great production renderer, but it currently struggles with one thing: caustics! Thankfully there are other open source render engines available. One is of particular interest for this case: appleseed. This quick tutorial shows how to render caustics in Blender with Blenderseed, the appleseed plugin for Blender.
This article is about baking normals with the Cycles Render Engine. But it also contains excerpts from our book The Cycles Encyclopedia. This is where you can get extensive information about how normals work internally and what they are used for.
The praying mantis is going Octane! In the fifth part of this tutorial series Frederik Steinmetz explains how to mix materials in Octane using nodes and maps. If you have not seen the other parts, we recommend that you watch the scene setup and if you are fairly new to Octane, please watch the Octane Pitfalls tutorial as well.
It's fairly easy to dissolve objects in Blender, but you can go even further. Learn how to use particles, a point density texture for volume rendering and a moving force field to get a ghost-like effect.