I think a beginner needs to focus on learning deer behavior. Forget the gadgets for the most part. After a couple years hunting you will figure out what "extra" equipment may work for you. Too many beginners just buy stuff and if they don't have success they figure it is because their stuff isn't working, so they buy different stuff. The call-makers and scent makers love it.
Here's a tip. Try to figure a way to access your stands without walking on deer trails. Deer trails can be very tempting to walk on because they are usually a bit easier walking. I know I used to do it. This will tip the deer off to your presence sooner or later.
There's no better tree-stand advice than this - wear your harness. Get into the habit of using it and stick with it.