How to display Filter Products by Category to Product List Page and Related Product in Product Detai

Dear All,

I just use MarketPress and I want to know:

How to display Filter Products by Category to Product List Page and Related Product in Product Detail Page with two type is PHP code and use ShortCode, And I want to Know, how to display recent product on Widget SideBar set limit is 4 item(use shortcode in Widget?) plz help me, If you can!

Thanks!