The trick to shooting turkeys is to get low. Images at their eye level are more interesting. Most turkeys in the wild are very skittish, therefore it helps to use some sort of blind and a turkey chair. A turkey chair is made for turkey hunting and is low to the ground.
Start by finding a location where you know turkeys tend to frequent and scout out what time of the day they are most active at this location. Then set up on this spot before they usually arrive, before sunrise is often the best time. Sometimes I just wait for them to come to my back yard, they seem to like 7 am. You can also try putting out bird seed or use a turkey call to draw them in.