Your question is really many in one. I'll provide some basic advice and then please ask additional specific questions as you go along so we can help you succeed in your gardening. I can't say for sure what killed your plants without more info and symptoms. However the basics are plenty of light, adequate soil moisture, good drainage (not soggy wet), moderate nutrition, and planting at the right time. The following web sites are a wealth of information on growing a vegetable garden in Georgia:
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