First up will be two cases (consolidated) dealing with whether Congress can have access to Trump private financial records. Next will be a case in which the District Attorney in New York has subpoenaed Trump’s accountant for his financial records in connection with a criminal investigation.
Oral arguments will begin at 10 a.m. They can be heard on any of several news outlets. I use C-Span. Just go to its website and click on the applicable Supreme Court link. If you do this before 10 a.m., be patient; nothing happens until the Supreme Court clerk activates the call and calls the Court to order.