What's the best way to organize my folders?
The folder system is flexible. There's no single right way, but a few approaches work well depending on how you use Spoak.
By room or space
Create a top-level folder for a project (e.g. "Primary Bedroom Renovation") and subfolders for each room or phase. Keep all designs, products, and images for that space together.
By client
If you're doing client work, create a folder per client at the top level, then subfolders per project inside each one.

The main thing is naming folders clearly from the start so that it's much easier to find things later. See How do I create a folder? for the steps.