Ecommerce website

Heyy guys I am verrrry new at wordpress and i dont know a thing about it..so the thing is, i am crating an online store..i have a domain and everything. I am using the theme “lightword” and the wp ecommerce marketplace plugin..so like when i add a few products, it automatically adds them to the products page, which i dont want. I have categories show as thumbnails on my products page, and i want the actual products to be inserted into the category page. I hope i make myself clear, somebody please tell me how to fix this! thanks! 🙂