Meta Tag Keywords: is supposed to be a brief and concise list of the most important themes of your page. Meta Tag Keywords are used by search engines to describe the content of your website
Meta Tag Description: a brief and concise summary of your page's content
SEO Keyword: try to keep a short but keywords rich URL when the 'Use SEO URL's' enabled on your store. recommended to remove stop words like "the", "and", "for" etc. The SEO Keyword is important for the proper indexing of your online store by the various search engines. Click Generate button to create automatic keyword based on category name.
Stores: select the stores for this category to appear.
Sort Order: set's the order of which the category will be displayed amongst others in the same parent category.
Add mages to category: in order to set an image for your category simply click on the "Plus image" and a Resource Library popup will appear. Upload a picture you like from your local computer or set a pre-existing one which is already uploaded in the images resource library.
Layout section: Select a layout to change the look and feel of the category your edit on.