husband in prison. we both want divorce. we have agreed to be civil as far as property and kids. how do i get started

To get started file a petition for dissolution of marriage in the circuit court. You do not need your husband to do this with you. Have him served in jail, and send him a proposed marital settlement, also known as an MSA and a blank financial affidavit. He can sign these documents and mail them back to you and you can proceed with the divorce in court. He may have the option of appearing by video link at the hearing but his presence at the hearing is not required. As long as you both are in agreement it should go smoothly for you.