What Is The Process Of Creating Layered Navigation (Including Category Creation And Attributes, Product Attribute Types, And Product-Category Associations)?

What is the process of creating layered navigation (including category creation and attributes, product attribute types, and product-category associations)?

1. First, you need to ensure the attribute is select for layered navigation within the settings of that attribute
2. Second go Catalog>Manage Categories> and set the price step (price is by default a layered navigation)
3. Go to System > configuration > catalog > expand layered navigation to show product count or not.
4. Lastly, populate the attribute (from step 1) in the individual product.  For example, you create a pattern for a shirt.  Then give it a checkered attribute option.