1. Go to Catalog
2. Create Product or Manage Product
3. Select your Correct Product Attributes
4. Go to Inventory => Select Stock Availability => Select In Stock
Other information what you want add here.
That is All ЁЯЩВ
http://www.magentocommerce.com/wiki/4_-_themes_and_template_customization/cms_and_home_page/add_featured_products_to_home_page
http://www.magentocommerce.com/wiki/4_-_themes_and_template_customization/catalog/add-attributes-to-product-grid
http://www.siteground.com/tutorials/magento/magento_product.htm