Kind of a wide open question.
What are you hunting?
Where are you hunting or going to hunt?
Don't figure on setting a fashion statement.
How old are you, I ask because we seem to swell with age. Buy larger than what just fits. It seems there is more nylon and plastics in gear today than in years past. So they may shrink less than some of the early cotton based materials.
I have read and still read on the thoughts of camo patterns and what game can and can't see. When some one gets a critter to the optometrist and communicates with them I would like to know the final word. Not trying to be a smart alec, but look back just a mear 60-80 years back. Most guys clad in wool, black and red. Some of the largest critters were shot by people with NO camo.
Maybe folks were better hunters back than, maybe more critters?
I have always stored all of my gear out of direct sunlight and usually in a foot locker, not a plastic tote. I have pants, jackets, shirts that are close to 60 years old. Still very serviceable, a large majority are BDU's from the 60-70's.
I won't mention but one brand I am loyal to and have just a few articles, Filson.
The rest, other than the BDU stuff was more than likely bought after season on clearance.
As mentioned above, try before you buy. Mail order is nice,easy and some times cheap, but a royal pain to return. And, if you have to return that bargain could turn into a worst deal senereo.
Washing gear. Way before all of the soaps and cleaners, all I ever used was plain old baking soda and cold water. I may tumble them in the dryer just a bit to knock the wrinkles out but much prefer out doors.
Scent absorbing clothes. Folks must smell worse than they used too? I will semi quote a fellow, never wash your hunting clothes till after season. I have left gear out in the rain and then air dried outside.
You can't work on the car, fry bacon and eggs, and fuel up on the way to your deer stand and expect not to be "busted" even up wind.
Figure what type of weather your going to hunt in and go from there. Dress in layers. If it's to hot when you leave, it may be dang cold when you head back to camp or your truck. Take extra, all of the wishing will not make it appear. If you have to much on, you can always peel some off.
Good boots!! Don't skimp here ever, or you will pay for it over and over. I see a lot of guys proud as a peacock of their $88 boots they bought the week before season. Opening day is not the day to break them in.
Red wing and Mindel are my favorites. I prefer leather, but have some new cordura for this year I am going to try out. A good pair of boots should last many years. I had a pair of red wings that went through 5 seasons of rough bird hunting. They failed when the leather wore through at the toe.
Mine is for sure not the final thought. It should give you somthing to chew on.
The main thing have fun, stay warm,dry and comfortable. Hunting has absolutely nothing to do with coming home with a full bag. Some of my best hunts I came home empty handed.
Jeff