Because these are community-developed, stability can vary. Below are the most reputable options for the

In TWRP:

Power off the phone, then press and hold Volume Up + Home + Power until the recovery menu appears.

: Google Apps package for Android 5.1.1 (required for the Play Store).

Root & Recovery: You must have a custom recovery installed, such as TWRP (Team Win Recovery Project) or CWM (ClockworkMod).