I would start with Google Earth and examine the areas near where you live. You have to learn to read what the maps and such show you. I like old maps. I love old newspapers. I lived in Gretna for a while and I know how much history there is in your area. Read history books about your area. I liked the area north of New Orleans. All of the coastal areas. But, like we say over and over, respect property rights. There are people in areas of Louisiana that shoot first and don't worry about questions. Every time you go out, even if you don't find a horde of buried coins, be richer by learning something. Get better each time.