If your question is really: "How do I download and license a learning version of NX?"
The answer is that there are several online stores where you can purchase it:
Be sure to follow the insructions exactly. You will need:
This version is called the NX Learning Edition. Be aware that with this license, files are not interchangeable with commercial versions. There are also limitations on what can be exported and imported. But it is great for use with a 3D printer, because it can export an stl file.
What are the requirements for proof that you are a student or faculty?
Student or Faculty ID ? Something else ?