I've helped a few friends organize their personal and business records.(Paper flow management, indexing, creating retention schedule policies and procedures). Mostly of what I learned is by reading articles from SMEAD Organomics and other online Professional Organizers and Records Management Websites.
My goal is to become a certified records manager and be a full-time Professional Organizer

Smead Viewables. I It's the most simple label maker to use.

I love all of them but I will say: Organizing financial paperwork. I think it's crucial for both personal and business. You are basically lost without your finances in order.