As someone who has had naturally curly hair for all of my 28 years, I can give you a bunch of advice
1. NEVER USE A BRUSH!!! It'll make it frizzy and huge. Only use a very wide tooth comb when very wet.
2. I would highly recommend getting a good moisturizing conditioner, as those perms are harsh on the hair, and moisturized curls are easiest to tame.
3. If you can, let it dry naturaly...if not, get a diffuser attachment for your hairdryer immediately!!! Don't get those ones that are like little socks either. Get the kind that are plastic with little "fingers"...they have them at target.
4. Styling products: Frizz Ease - it's a godsend, but you need to put it on your hair when it's still dripping wet! Then, I use Clinique Defined Curls, which kicks ass. Sometimes a bit of gel too, on a bad hair day
Good luck with the curls! I hated mine for a long time, but now I'd not trade them for the world!!