From your administration page select the "Catalog" tab, and then click on "Products". To add a product, click on the "Add" button, fill out the product information, and click "Save".
If you check the 'Advanced Option' box you'll be able to add extra information including the Tax , Weight and some other advanced options for your products.
Miiduu uses the product names as the title and url default. Generally, this is the preferred method for SEO. You can also customize the SEO URL and add tags for your products by checking the box of 'Search Engine Optimization'.
Your product is automatically added to your store, and you're ready to sell!