Attributes are the specifications of the product. For example, monitor size in TV, camera quality in mobile phone... Besides, it allows to compare between products. When viewing products in the store front, customers have the option to add products to "Add to Compare" to analyze the similarities and differences between products. You can create universal attributes for specific categories of products
You can combine attributes into groups. To create an attribute group, go to Catalog - Attributes - Attributes Group and click "Insert".
Go to Catalog - Attributes and Press "pencil button" to edit or "+ button" to create a new attribute.