Hey Dan,
Your confusion is totally valid – in our recent update to the console, we have since abstracted the concept of organizations from the front-end. If you created the product pre-console, then you created an organization and set its name. The slug would just be the downcased and dasherized version of the name (i.e. “Jeff Organization” => “jeff-organization”).
If you just created your product, the slug of the organization is the same as the slug of the product. You can find this in the console, when you navigate to any product-specific URL. It is the downcased/dasherized version of the product name + the product version. For example, on the devices page for a product called “Foo” with version “v1”, the URL would look like: https://console.particle.io/foo-v1/devices, and the slug would be “foo-v1”.
Does this help?
Jeff