Keeping track of purchases and design assets

I am wondering several things?

  1. How do you keep track of all your design assets for viewing on your computer?
  2. Do you use a specific software to view these assets?
  3. Do you have a file / folder structuring system that you’d care to share?
  4. How do you keep track of all your software? If you have an excel spreadsheet to share in keeping reg codes, dates of purchase, expiry etc to share, I’d love that!

Trying to get more organized day by day. Looking for inspiration!
Happy New Year!!