keep the focus on the kids and yourself. It really sucks at first, but you'll be amazed when you look back a year from now at how far you have come.
Our divorce was so simple, Virginia requires you to live in separate residences for a year before filing. Once that year was up, she called me and asked if I wanted anything(material)from her, i said no. I asked her the same, she said no. She had a co-worker that was a notary, we printed off the papers signed them, had them notarized, 30 days later we get a congratulatory letter from the commonwealth. Pretty sure that even during that year, we began co-habitating for financial reasons, but that was none of the commonwealths business and we lived our separate lives. Kids were always the focus for us. I am grateful we were adult enough to realize that and follow through with that plan.
Best of luck to you. Always keep in mind you are not alone in this next step. More people than you realize are going through it or have gone through it. Use their experiences to help you go forward.