how I can insert data to the server using http services in A

Hi am new to angular 2.. i am trying to insert data in to a api server..I am able to fetch the data but I dont know how to insert using http services...please help me.I am not able to understand the stuffs in google regarding this.

 

i added to ng model to html and a interface class details.ts

 

I need to know what all are in

 

1.services

2.components

3.save botton click