I recently just captured over 900 pictures on my trail camera that we set out for my sons Bull Elk hunt. The best advice I have for setting out your camera.
#1 Find a well used trail/water hole etc,
#2 Make sure that you set camera facing the north whenever possible during the summer months. You will not get any false pictures taken from the sunrise or sunset.
#3 If the surrounding area is flat, put approx 3 feet up off the ground. If you set it too low, all you will get are legs.
#4 Clear all the branches/grass etc away from the camera or you will get pictures from the wind
#5 Spray scent control around the area after you are done setting up
#6 Leave the camera out for at least 2 weeks at a time. The more you leave the area alone the less scent you will have in the area.
#7 Don't check the camera early morning or late evening. Check it in the middle of the day when the animal you're after will most likely be bedded down somewhere.
#8 Lock the camera up. You never know who might try to take your memory card with them.
#9 Carry a card reader with you. Even a small laptop will work. Alot of inexpensive cameras out there will read the same memory card you use.