The latest Maya 2018/Arnold 5.0 assets for the Autodesk internal production Hyperspace Madness have now been made available.

More Arnold renders can be found here.

A simple tutorial that demonstrates how to create a toon shading effect using the Facing Ratio shader can be found here.

OATS STUDIOS have made the assets from their fantastic short films available to purchase on STEAM.

Here are some renders using Arnold.

JSplacement is a rather cool pseudo-random 8k displacement map generator made with JavaScript. It generates grayscale height maps that can be used for displacement. Below are some tests using Arnold.

The image below required a higher than normal number of Subdiv Iterations (9) to capture the fine detail from the generated displacement map.

Here is a tutorial that covers how to render a car model in an automotive studio environment using Arnold.

Pingo has created a 3D Jewellery Visualization course that uses Arnold for C4D, with over 5 hours of material in 20 lessons.

Arnold 5: (AlShaders2): https://github.com/anderslanglands/alShaders2/releases

Quixel have an impressive library of scanned assets available for rendering with Arnold. Below is a test render using one of their wood stump assets.

Some free HDR maps can be downloaded from the websites below:

http://www.maximeroz.com/hdri/

http://noemotionhdrs.net/index.html

https://hdrihaven.com/

http://www.noahwitchell.com/freebies/