Your WordPress dashboard is a collection of gadgets using which you can get information at a glance. You don't need to navigate through several pages to get them. According to your taste, you can customize your dashboard following instructions are given below:
Step 1: On your WordPress dashboard, click on the Screen Options located on the upper right side.
Step 2: This will open a checkbox menu wherein you can choose sections to be visible or not.
In addition to this, some of the plugins may offer you additional Dashboard gadgets.