Gforrestersmith, welcome to the forum and the world of turkey hunting. You are getting started at a very young age and you will have many years to learn about turkeys and turkey hunting. Good for you! ....But remember that turkey hunting can be difficult and discouraging, even for much older hunters than you are, so take your time and learn all you can about wild turkeys and don't give up. It will take some time, but if you give yourself time to learn, you will find that turkey hunting is a lot of fun and is a very rewarding way to spend your time out-of-doors.
First of all, try to get your dad to buy you a subscription to Turkey and Turkey Hunting magazine, or get you some other books on the subject or videos. Spend some time reading about it and watching some good instructional videos. Also, try to get your dad to buy you some calls...like a "push-button" call, or a "box" call, or a "slate" call...and spend some time learning how to make the sounds that turkeys make, especially hen (female) turkeys.
Also, there are two different seasons for hunting turkeys...the spring hunt and the fall hunt...and the methods of hunting in each season are entirely different. Which season are you hunting in? The most popular is the spring season (takes place during the springtime), which revolves around the hunter imitating the sounds of the hen turkey to try to attract a gobbler (male turkey). Gobblers like to gobble to attract hens, especially early in the morning (right at daylight), so you want to be sure to be out in the turkey woods very early at first light so you can listen for gobbling from turkeys roosting in big trees in the area you are hunting in.
If you are in an area that has many turkeys, you will almost always hear them gobbling at daylight in the morning. Once you hear them, you want to try to approach as closely as you can without being seen, sit down and be still, take the turkey call that you have learned how to sound like a hen turkey with, and call to the gobbler to try to get him to come to you. If he comes, be ready to shoot and do not move until he gets close enough for you to have a good, close shot and then shoot at his head, not at his body.
You can use your decoy if you want to, but always remember that using a decoy can be dangerous if not done properly, especially a gobbler decoy. Before you use the decoy, be sure you understand about the safety issues involved and always be careful! Sometimes decoys help you and sometimes they don't...and often you can call gobblers without the use of any decoys at all. Many of us hardly ever use decoys when turkey hunting.
Of course, this is a very quick summary of how you turkey hunt. There are a lot of other things that you must learn about, especially being a good, safe and ethical hunter.
If you learn as much as you can about turkey hunting before you go out, you might kill a turkey in one day or one weekend. However, you must have patience and not get discouraged if you do not get a turkey right away. Being a successful turkey hunter will take you some time, and part of being successful is learning all of the things there are to learn about the wild turkey and how to hunt and call them in. And all of that can be really fun and rewarding, even if you don't kill a turkey right away.
There is more to hunting than just shooting something, and this is especially true about turkey hunting. Do not get discouraged and give up. Many of us have hunted lots of different game, both big and small, in our lives, and I would bet a lot of us older hunters would say that turkey hunting is the best of them all. Good luck to you! (And keep those questions coming...we will all try to help you as much as we can!)