Gore-Tex Experience More

Start with a wicking layer. The rest depends on your build. I pack with a guy that's my height but 100 pounds heavier and he hardly wears anything ever and is in shorts down to 32 degrees.

I'm skinny as a rail. I wear many layers. Most fleece is too bulky, but some are okay. I love my body sensor by terramar long sleeve shirt. It's wicking and it has a zipped collar to control heat there. Plus the sleeves are extra long with thumb holes to keep my wrists covered. Once I stared wearing these shirts, I found I didn't need to use my mittens as much. Turns out I was losing a lot of heat at the wrists before. This shirt is great for that since one can lose a lot of heat at both neck and wrists.
Speaking of mittens, I use a mazanara glove liner with Gore's Windstopper fabric. They are super thin and great under a mitten. The mittens are hot fingers with Marmot Gore-Tex shells over them. Don't screw around. Too many macho climbers are sitting in cafes telling stories about the fingers etc. that got frozen off because they were too whatever for mittens. And tie or clip those on so you can't lose them. I was once out and the thermometer bottomed out at negative twenty by eight in the evening and with the mittens, etc., I could barely move my fingers. Thank goodness I had them. The thermometer took two days to get above -20 again.
For the feet, I use either a thin wool liner if it's below zero or thin silk liner if it's above. Then I'll put on a wool or Smart Wool sock over that. A range of socks is good and you can experiment with the thickness depending on the temp and the exertion.
Same goes for the long underwear bottoms. I have thin, medium, and expedition weight and the thin are good to 20 degrees, then the medium to ten and the expedition to zero. Below that temp. I wear a thin pair with an expedition pair over it. Of course, Gore Tex on top of it all.
For the head, I take a turtle fur balacava, but I don't use it much above zero degrees F. I do have a thin balacava I wear when it's windy and above zero. I have various stocking caps. Just got an Underarmor skull cap that is great and stretchy so it fits on my big head, but it's thin so it fits under a helmut too.
A face mask is a must have if you're out mid January etc. depending where you live. If it's -15, leave no skin exposed. NONE. I've seem too many frost bitten faces on ski slopes mid January. Even then, at -15, with a face mask, I've had the area around my nostrils get frost bite and peel, so you have to be careful.
And don't forget, a lot of greasy lotion can make a big difference in really cold weather. There are products with names like Face Freeze that can add a small degree of protection too.
All this advice is only good to about -30. That's about where my experience ends. Maybe a Canuck or Alaskan could provide more info if you're going colder.
Be careful. Have fun.