There is lots of good advice here but I'll throw in my .02 anyway.
Start here:
http://dnr.louisiana.gov/
Locate the nearest DNR office and go pay them a visit if you can. See if you can speak to a game biologist. Take him/her to lunch and pick his/her brain. You want to know the areas with the best populations of deer and fewest hunters. Game Wardens are usually good guys but they are primarily law enforcement. There is no guarantee that they know anything about wildlife and many have never hunted or fished. (Of course, some are avid hunters but many are not.) At a minimum, the game biologists have a B.S. in wildlife management, and usually a Master's degree. They are virtually all avid hunters and they all recognize the legitimacy of hunting.
If you have land to hunt on, then you're halfway home. If not, you want a map of the public land open to deer hunting in your area. You also want to know what special permits (if any) are required to hunt big game on public land. Obviously, you want to know when the seasons open and close, shooting hours, bag limits and if, how and when does can be taken (if you're open to taking a doe.) You also want to know how the game must be handled. Some states have rules about field-dressing near roads, streams or on public land in general. You want to know if the animal must be tagged, how and if it must be taken to a checking station. All of these questions are usually answered in the regs booklet published by the state but some are more confusing than others.
Next, you want to go and scout several likely spots but avoid doing so during bow or muzzle-loader season. A "likely spot"' could be a terrain feature that tends to funnel deer like a narrow patch of woods bordered on both sides by fields or water. It might also be a narrow spot on a lake, river or canal where deer would find it easier to cross. Deer also like edge habitat where two or more types of cover converge. Fields, pine plantations, bottom land timber and mature oak-hickory forests can all hold lots of deer but only at certain times of year. An area that combines them all will hold some deer all the time. Try to get as far away from roads and parking areas as you can. If the area is only accessible by boat, so much the better. I use a mountain bike to ride the closed fire roads because ATVs aren't legal on gated roads in my state. I lived in Memphis and drove 1.5 hours to my spot then hiked for 45 minutes to get away from the crowds. I never saw another soul in my spot. I saw a few on the way in and out, but never as far back as I went.
To narrow it down to a specific spot, you obviously want to look for rubs, scrapes, droppings and tracks but you also want to key in on food sources, travel lanes and bedding areas. If you find a white oak tree with lots of sign near it, back off as far as you can down a game trail while still being able to see the tree. For a first-timer who is self-taught, that's going to be about as good as it gets.
Buy a good, comfortable, lightweight climbing stand (such as the Summit Viper SS) and practice using it in the daytime in a controlled environment. Practice with it after dark and with your hunting clothing and gear. If you have private land to hunt, use a ladder stand that you set up a minimum of two weeks in advance. Lugging the climber in and out of the woods gets really old. Above all, wear the safety harness and use a haul rope to get your gear and unloaded gun up to you. Settle in 1/2 hour before legal shooting hours and wait, and wait, and wait. If you don't kill a deer your first time out, don't be discouraged. I was largely self-taught and I hunted many years without seeing deer, much less killing one. It's harder than you think.
Oh yeah... If I can get the deer to the processor within an hour of going down, I pay the extra $7 and let him gut it. If not, I field dress (actually, I hog-dress). I've never had a problem with the meat tasting strong. I also request that no fat is added. I like the natural leanness of it and some processors add waxy beef tallow which I don't like.