如何使用JQuery切换功能在点击时显示/隐藏DIV？

I am trying to display a DIV when clicking on another DIV. I am new to JQuery and wanted to use only CSS but since I am using PHP to loop through my DB to display all of the DIVs created I need to use JQuery to display the hidden DIVs individually. When clicking on I am trying to display a DIV when clicking on a