First Day: Freak the fuck out and then calm down.
Do: Gather as much as I can from grocery stores, gun shops, supermarkets, restaurants, car dealerships, gas stations, ect. Form a mini squad or survivors
Supplies: A shit ton of medical supplies. As much food as I can carry, a mother fucking hummer, gallons of gas, tons of water, hatchet, matchbox, rope, flashlight, water purifier, radio, AND A CROSS.
Weapons: An axe (or machete), silenced pistol, silenced SMG or AR.
I would then listen on the radio for any official instructions from the government that would tell me where I should go, and make my way there.