Low RPM, don't touch the throttle when you set off from lights, then gradually add more, back off immediately when wheels are slipping.
Don't drop the clutch, let it slip, at idle rpm it can take some abuse. Some even launch at 2nd gear slipping the clutch, but I think it is tad extreme.
If your handbrake is in perfect balance and working like a new, then you can use it as poor man's LSD, it requires some practising, but idea is to brake other side wheel just so much that other side starts to turn too.
Best is not to stop to uphill, slow down before lights and crawl forward, it is much easier that way, even tiny movement helps.
If got stuck, you can throw soft rubber mats from car to under rear tires and you might become unstuck. Practically any kind of wire mesh should work too, time to nick front grill from that chav's Nova or whetever they put those these days.
Add more weight to boot.
Snow is not bad, gravel is (floorpan is resting againt ground there, oilpan sunk already into gravel):
Tom, I have driven with such snowtires from 90's and it is not much of fun, my summer tires had more grip
I had serious problems with these tires,

I will upload video demonstrating grip of those for all you to laugh at, but it takes time to upload it, also need to annotiate for best viewing comfort.
VND, it is not all about snow and ice, winter tires work better on cold weather, where summer tires are out of their operating temp range.