Practicing guitar, regardless of what type of instrument or what style of music you play, means you need to follow some general rules.
Set aside at least 20 minutes every day for practice.Make sure you are not disturbed by noises other than the ones you create yourself.
Rest the guitar on your right leg. If you are left-handed, rest it on your left leg.
Flex your fingers to loosen your joints.Check the tuning of your guitar and re-tune it if necessary.
Finish your practice session by playing music you already know, and polish your skills on it.