Hello and Welcome to the forum.
What more do you want to learn? Just how to make pretty pictures (download Mandelbulb 3D from our Downloads Section or Mandelbulber from the links in the Software section of the forum) or the Math behind it (read the "Theory Section here) or how to code a Fractal Generator to create them (See the Programming Section here)?
I'm sure the answers to all of the above, and more, can be found in this forum
