Hi. You need a competent divorce attorney to represent YOU.
It's money well spent. Get one. Monday morning. Without hesitation.
Divorce is NOT a DIY project. Unless you are a divorce attorney you can't do this yourself.
Attorney. Tomorrow. No playing "nice."
I agree with wisdomtooth.
You need a separation agreement in order to divide the marital assests. If he will calmly come to agreements with you, than you can do it yourself. But, from what it sounds like, he probably won't, so i agree with the previous posters. get an attorney to assist you with the steps.