go to http://localhost:3000/users/register and send post request - name, email, password and biz(not required to register)
go to http://localhost:3000/users/login and send post request - email and password
go to http://localhost:3000/users/find and send get request
go to http://localhost:3000/biz/create and send post request - bizName, bizDesc, bizAddr, bizPhone and bizPic( not required for creating a card)
go to http://localhost:3000/biz/update/[id] and send put request with the details that you want to change and the id as params
go to http://localhost:3000/biz/find[?id=...] and send get request with the id as the query params
go to http://localhost:3000/biz/userCards/[id] and send get request with the user id as params
go to http://localhost:3000/biz/delete and send delete request with the card id in the body