Here are the minimum requirements in my opinion for TN hunting. As stated, you can get some decent clearance deals at Academy or Wal-Mart. They don't have the best but still decent starter gear that will get you by.
- Wicking base layer pants and top (preferably merino)
- Warmer base layer pants and top (if really cold)
- Outer regular pants layer
- Outer shirt layer (I prefer a windproof hoodie)
- Possibly an insulated or fleece vest if really cold
- Insulated bibs (preferably windproof and at least water resistant)
- Insulated jacket (preferably windproof and at least water resistant)
- Decent pair of insulated, waterproof boots ( I wear mucks)
- Thick and thin merino wool socks
- Blaze orange hat and vest
- Something to sit on - chair, cushion, millenium tree seat, etc
- Gloves
- Hand warmers
- Ear / face covering if your face gets cold easily
- Some type of scent free detergent (doesn't have to be hunting) to wash clothes in
- Some scent free soap to shower in
- Scent free deodarant
I would consider that the bare minimum. Other things to consider are binoculars, shooting sticks, backpack to carry stuff in, grunt call, scent spray, etc. A decent knife to field dress a deer is good as well, however, I have field dressed a ton with a Case pocket knife as long as it's sharp. I carry a specific knife now but not absolutely necessary.
My advice is to not get too caught up in a lot of the gadgets designed more to catch a person than to kill a deer but focus more on reading deer sign, considering wind direction / thermals, and learning how to use the terrain of the land to your advantage.
Another piece of advice is to shoot the first legal deer that you see, period. Don't get caught up in the hunting shows or even the deer posted on here. That will come with experience and goals will change if you get into and enjoy it.
The main part though is to have fun. You will learn a lot from trial and error.