You're looking for a comprehensive guide on obtaining a complete set of SNES ROMs, updated to the latest versions. Before I dive into the details, I want to emphasize that:

A ROM set, also known as a ROM collection, is a compilation of ROMs (Read-Only Memory) for various games. In this case, we're focusing on the Super Nintendo Entertainment System (SNES) library.

That being said, here's a step-by-step guide on how to obtain a complete set of SNES ROMs, updated to the latest versions: