I need to add "product type" to my Commerce kickstart site.
i should add in "add new content type" or "add new variation type"..?
(demo store products has similar content type and variation type. so confusing)
can anyone tell me difference between product variation type and content type in Commerce kickstart and help me..?


I suggest reading the docs at http://www.drupalcommerce.org/ to learn the difference between commerce_product ("product", "product variation") entities and node ("content") entities.

Thanks bojans. But its very difficult to understand there. Thats why i am trying to find simple way.
Thanks for reply though