Michael,
Great choice. Someone will send you an email on how to "post roll." That is your promise not to have any nic that day. Post roll everyday, keep your word, and the rest is history.
Don't worry about tomorrow, next week, or quitting forever...just today. You can get through one day without nicotine. When today is over, post roll and give us your word that you're gonna do it again. It is that simple.
Cravings come and go...mostly come at first...but they will go. You probably won't sleep much, but that too will come back in time. You can do this.
You've taken the first step...we're here to help with all of the rest. Read all you can on this site. Quitting is a terrible/wonderful experience that we've all been through. YOU can do this.