Because the IWB has been built using the nodes that come shipped with Blender, it should work in any version of Blender that has these nodes, though I would always recommend anything above 2.8 to be certain as this is the version it was built in. All of the Infinite Builders are fairly GPU intensive, on an RTX 2060 with 8gb ram it's very smooth in the viewport, but on a mac with an ATI HD5770, the updates are somewhat slower, though still workable.

The only limitation you will find is how many subdivisions your system can handle and render. It was built on an i7 8th Gen 8750H, an NVIDIA RTX 2060 with 16Gb ram, and after I subdivide the geometry 5 times, add a subdivision surface set to 3 in the viewport and 4 / 6 in render, I always get the results I need. 

The higher the global scale, the more subdivisions you'll need to bring out the detail, so bear that in mind when making larger surfaces.

The 2-part guide video is in the link on the main product page which will take you through all of the controls, including texture baking.