Can anyone help me with selectors :(

Can anyone help me with chosing the selectors for my site? I would appreciate it so much!!

Theme: Barberry
Shop Link: goo.gl/A7TKd1

Content Selector:
Navigation Selector:
Next Selector:
Item Selector:
Callback:

Thanks so much in advance to anyone that can help with this.

– Chris

https://www.ads-software.com/plugins/infinite-scroll/