Learn to call,what calls or call to use when and were, learn to hunt the wind, learn how to get in and out to your hunting site with the wind. The less deer know their being hunted the easyer they are to kill.
Don't fall in to the advertisements and all the things you just have t0 have to kill deer. BELEIVE ME YOU DON'T NEED ALL THE GAGETS.
Crooketarrow is completely right on this. You don't need the gimmicks, you just need practice, and patience. If you spot and stalk, try to stay in the shadows of trees, behind rock faces, in thickets, move quickly but quietly. When I hunt I move like I'm taking a brisk walk through the fields. Sometimes the animals spook, other times they just don't think I'm after them I guess.
I guess the biggest tips would be make sure you've got water on hand or can get to it easily, watch your step, don't take a shot you can't make, and trust in your gut.
I don't use cover scents accept sagebrush (My camp soap has sage brush in it for some reason) Honestly I've never felt the need to use them, if you keep the wind in your face it shouldn't matter. Calling I'm not very versed in since I've never really had luck with it in my neck of the woods. From what your area looks like I'm guessing spot and stalk might work out best, then again you could sit a water hole if you wanted or set a blind on a game trail.