The best place to look would be the County website under Down Payment Assistance programs, contact a local realtor who work with first time homebuyers, or visit my website http://newgwinnetthomesforsale.com/services/home-loans-down-payment-assistance/.
It's great your looking early, I have a notification system that can help you with your search. You might have to meet some requirements, get a clear understanding on how to move foward with the buying process before you place an offer.
Cottell Cooper, Real Estate Consultant
BHGRE Metro Brokers
search like an agent : cottellcooper.metrobrokers.com