first you need to use "Postman" as a frontend. (https://www.postman.com/) then :
- go to the link :https://computersgop.herokuapp.com/user/register to register. username: ***** password: ***** email: *****
- go to the link :https://computersgop.herokuapp.com/user/login to login.
- go to link : https://computersgop.herokuapp.com/products to get all Products.
- you could find one product by writing his name like this : http://localhost:8080/products/hw-0004
- you could also add a new product whit the folowing stracturs : http://localhost:8080/products/ articleNo: ****** name: **** description: ****** price: ***