Welcome to the forum.
1. Find where the deer are living when they're not feeding, basically their bedding area. Find out what they are feeding on when they are active. Put your stands on trails that lead between the two areas.

2. Always pay attention to the wind. It's the most dependable way to hide your scent. Place your stands where you have good cover to hide movement. Stands too high make it difficult to make good shots when the deer are close.

3. I get down immediately. If I made a good shot, that deer will be dead before I get out of the tree. If I determine that it's a possible gut shot, I'll back out quietly and come back 6 hours later or overnight, whichever comes first.