How to install Custom Recovery for Samsung Galaxy Prime

Downloads :

USB Drivers " You have to install this befor any thing "TWRP Recovery 
Odin Flashing Tool

Instructions :

1) Download Odin, TWRP Recovery file to your laptop/PC.
2) Turn off your phone.
3) Go to download mode 

(by pressing Volume down+home+power buttons at the same time for about 6-8 secs)

4)Press the Volume up button to continue.
5)Open the ODIN file you downloaded on your laptop/pc.
6) Connect your phone to your laptop/PC through USB cable.
7) When ODIN detects your phone, It will show added in the Log.
8) In ODIN click on AP and then select the recovery file you downloaded. 
9) Click on start. The flashing process will start.
10) If the flashing succeeds, ODIN will show

 'PASS'

. That means the recovery flashed successfully. It will boot into recovery.

11) Swipe to Allow Modifications. Click on Reboot then System.