Thanks for the guidance, here are some more questions:
1. I managed to import via CSV, but it doesn't load the image, in which case will I have to manually add the thumbnail?
2. To make this website with coupons for discounts and offers, will I need to use the Woocommerce plugin?
3. Is there another form available in the template, which allows to carry out the automatic mass import of coupons and offers?