The best ways to get your hair grow faster and longer is by regularly stimulating your scalp by massage with the lukewarm coconut or almond oil. You can also use Castor Oil, Avocado oil and Extra Virgin Olive Oil on your hair and make sure that you have daily intake of vitamins and drink plenty of water.
Drink lots of water. LOTS. And when you're washing your hair, spend extra time massaging the shampoo's into your hair. Use natural or homemade shampoo's (they're surprisingly easy to make/buy homemade). Also, cut back on straightening/curling and hair products. Trimming split ends helps a lot.