Congrats on Day 2, but remember...it is ONE day at a time. Focus on right now. Just get through today, post roll, and do it again.
Read all you can on this site...tons of genius to be mined on here. Sleep will get tough, start taking metamucil now...don't wait. Drink tons of water and exercise.
Nic will be out of your body soon, but the cravings will still be there. Stay strong and stay quit, brother!