The first and most important thing to do is find yourself a farm near a good water source and obtain permission to hunt it. I usually just stop by and ask. All they can do is tell you yes or no. I usually ask if anyone else hunts there or if they have ever found anything.
Look for high ground or ridges that are above the flood plain. Walk these and look for evidence of occupation. Finding pics of Flint, Bone, Shell, and even Pottery can be a sign of a camp or a village. Once you start seeing evidence, even if it's just Flint, walk the area in a back and forth pattern about 6 or 8 feet apart and check every rock and piece of Flint you see. You will eventually get an eye for what to check and what to leave alone.
Basically all you need is a stick with a nail in it to flip Flint out and a pouch to put your finds in. I use an old broomstick myself.
Good luck.