Wool socks, I like Smart Wool. I use ski socks that go over the calf.
Use thin liner gloves, under wind proof outer gloves.
Don't try to stuff extra thick layers of socks into your shoes, that just crams your toes and reduces circulation, making your feet cold.
Add wind proof, like neoprene, shoes covers, and if your shoes have vents in the soles, cover them up from the inside.
You might have to experiment a bit to find what works best for you.