Ground or "still hunting" is very hard but you can still do it your first year out. I have been hunting this way since 1988 and do not go into tree stands that much. This year will be the first in a long time hunting from a tree.
Still hunting can be very frustrating and unless your scent is covered it can be very hard. It is also one of the most exciting ways to hunt. So many aspect to get into I will only cover a few. Cover more ground when conditions are good like in wet weather or slight wind but go slow. If you cover more than 3 miles in a day you probably where going to fast. When you stop for anything, go into cover. Hunt with the sun to your back and wind in your face if possible. Become skilled with your weapon. For some reason I always seem to mess this part up! lol
Tree stands have many advantages. Your scent is above the deer and they don't look up for danger as much as on the ground. If your camo is set up with a blind you are virtually invisible and can move around more without getting busted. Makes shots easy as the deer is usually unaware. If your area is limited it is a must! Safer as you are shooting usually down. You see more deer without disturbing them! Disadvantages: Bathroom time, gets really cold, can be dangerous if safety harness is not used or winds kick up.
I would try both! Set up your stand in a really good spot that has sign. (Private land leave it up.) Hunt it if on public land. Then try still hunting and see which you like better. Both are fun and exciting! Good luck and keep us posted!