Manually edit Pages of coupon theme

Hi @Mark,

I want to edit some part of the coupon theme manually (and not using elementor) can you please guide which php files should i modify if I want to modify following pages?

Home Page (Header/Body/Footer)
Search Page
Single Store Page
All Stores page
Single Store Page

Also can you please let me know the shortcodes available for following
– Display Popular Stores in Owl Carousel by count of available coupons
– Shortcodes to display coupons by Category
– Shortcodes to display coupons by Popular, Ending Soon, Recently Added etc.

Also, currently on home page coupons are displayed only in list view and chance of we can display them in grid view?

Regards,
Vivek