Basics

Categories and tags work in much the same way as any other post type categories and tags. They can be applied before or during the creation of a product.

Attributes, on the other hand, are different – they can be added per product, or you can set up global attributes for the entire store to use (for example, in layered navigation).

Product Types

With attributes and categories set up and stock management configured, we can begin adding products. When adding your product, the first thing to decide is what type of product it is.

• The Simple product type covers the vast majority of any products you may sell. Simple products are shipped and have no options. For example, a can of drink.
• A Grouped product is a collection of related products which can be purchased individually and can only consist of simple products. For example, a PS3 could be a grouped product as there are 80GB, 120GB and 200GB variations of that same parent product.
• An External or Affiliate product is one that you list and describe on your website, but is sold elsewhere.
• A Variable product is a product that has different variations, each of which may have a different SKU, price, stock options etc. For example, a t-shirt available in several different colours and/or sizes.

Adding a simple product is a straightforward process and similar to authoring a standard WordPress post. In the Products menu, click Add Product. You will be presented with a familiar interface and should immediately see where to type the product title and full description.

• Click Add Product from the products menu
• Add product name and description

• Set product data such as price, tax, videos, stock quantity, shipping price,  etc.

• Set categories using the menu on the right
• Add product tags
• Lastly, add product images. Featured image appears on the shop pages as the main photo of the item, and gallery photos are the additional photos or detail shots of the individual item

https://docs.woothemes.com/document/managing-products/