Court rules are the formal rules of court procedure unique to each jurisdiction. Every jurisdiction will have its own idiosyncracies and specific ways of conducting the business of court, so it is vital to research what is expected beforehand.
Fortunately, the vast majority of courts publish this information online for free. If internet access is not available, the relevant Clerk of Court will typically be happy to assist with any questions or concerns.
These are links to the local rules for the United States District Courts of Florida. These are Federal courts; as probate matters are almost always controlled by State law and Federal courts will usually decline to hear them, it is extremely unlikely you will appear before them on an estate matter.
The local rules are nonetheless provided for your convenience; should the links stop working, simply search for the official website of whatever District you are looking for (Northern, Middle, or Southern), and the rules and other important forms should be readily available.