Check out some of the threads that are pinned at the top of this forum. They contain good tips about twisting vs latching, products, build up, etc. I suggest that because it would be pretty much impossible to list everything here.

But I will tell you my top tips- LESS IS MORE. Don't overthink it, just remember that the only thing that will prevent your hair from locking is a comb coupled with a lot of conditioner and patience. That said, your top priority should be keeping your hair clean and the rest will take care of itself.