Many artists are publishing their parameters for their Mandelbulb 3D works, myself included. But sometimes it's more convenient just to have the lighting they use because that is one of the hardest parts to learn when you are just starting out. Here's a collection of lighting settings. Note: the names may not be indicative of what you get, but you will get a variety of colors and lighting settings that aren't in the default set.
To use them, unzip the file, and load them into Mandelbulb 3D using the "open full light and color parameter button" as shown.