The Federal Courts include the Bankruptcy, Districts, Appellate (includes various appeals from patents, international trade, NLRB, tax court, etc.), and Supreme Courts.
Federal Courts in California
Case law, also known as "common law" or "case precedent" comes from decisions made be courts and are published in books called reporters, the online version of these books are also called reporters. Cases interpret and apply statutory law and regulations, creating and refining the common law.