Camo anything will work if you don't let them see you move.

Calls the friction call is the easiest to learn but for close in calling you should learn the mouth call, just get a single or double reed to start. Learn the yelp thats all you really need to bring in most toms, if you are close to a roost the fly down cackle and hitting a tree with your hat can be amazingly productive.

If you have an area you see gobblers in check for south or east facing ridges or gullies and look for their for roosts. Use a locater call just before dark or first light to pinpoint and check roost.

Decoys, I always bring them but I don't always use them it depends on the situation and time, any decoy will work in the right situation, just place it 15 to 30 yards from you off to one side.
Most importantly pattern your shotgun at 30,and 40 or 45 yards so you know if it will kill at those ranges, my set up gets 64 pellets in the head and neck at 40 yards= a dead turkey. You don't need that many.
Any way thats my two cents, it works on Merriam's but it is only the basics have fun learning and be safe.