Leave the marital home before you file for divorce. Get to a safe place first so your husband can't retaliate. Do it when your husband is at work and you can be reasonably sure he won’t return home unexpectedly. If you don’t have family or friends who can help you and call the police in the event of a surprise altercation, call your local domestic violence shelter or the National Domestic Abuse Hotline at 800-799-SAFE. They can usually help you move out and give you a secure place to stay while you prepare to move forward. They can usually also help you find an attorney.
Get a new cell phone, one that does not include your husband's name on the account. You’ll need it to be able to stay in touch with your attorney and those who are helping you. If your husband has access to your cell account, he can identify with whom you're speaking and possibly track you down. Some states have mail services for victims of domestic violence. You can sign up and use that address as your official mailing address, so you don’t risk your husband learning your current whereabouts. If such a service is available in your area, the domestic violence shelter can give you the contact information.
Go to your county courthouse or local police department and request a restraining order against your husband. Do this after you’ve moved to a safe place and have taken steps to conceal your whereabouts, or simultaneously when you leave. If your husband is likely to become enraged when he’s served with the restraining order or your divorce papers, you don’t want him to be able to find you and retaliate.
File a request with the court for temporary spousal support, child support and custody while your divorce is in progress. In most states, you can do this at the same time you file your divorce complaint or petition. Restraining orders also sometimes include provisions for child support and custody.