hi there ! i can't find the information for your own custom made Fresnel group . Thank you!

Hi Nicolas, would you mind letting me know where you found this information? Although Kent does frequently include Fresnel into his shaders I couldn’t find a video showing us the creation of his Fresnel group node. I checked current courses like Fundamentals in Shading, the Pancake Hobo and even his archived courses… I am a total beginner to Blender and can’t figure out what nodes connect to both his group input and output Factor A + B sockets. Any help would be greatly appreciated, thank you 🙂