Lost memory stick for ender 3 neo

I just received a Ender 3 NEO 3d printer and some how i lost the memory stick which has necessary software to operate the printer. Where can I get a replacement memory stick or find the necessary operating software.

I am just getting into 3D printing and need assistance, is anyone out there willing to help an 82 year old man get into 3d printing. I am knowledgeable in AUTODESK Inventor and want to make custom parts.

I live in Surprise Arizona and am willing to pay someone who would be willing to act as a teacher.