Most cases start by the filing of a Summons and Complaint (or “petition” in many family law matters). Unfortunately, the party filing the lawsuit often has to pay a filing fee with the court clerk. At the time that your case is filed, the court will often generate a “case schedule” including important dates and deadlines.
Once a case has been filed, the opposing party needs to be provided notice of the proceeding, this is often done through having the party “served,” or having their attorney accept service.