https://en.wikipedia.org/wiki/Federal_tribunals_in_the_United_States
“Under the Constitution, Congress can vest these courts with jurisdiction... “
A start. It’s not simple.
I actually enjoy learning about the law.
Google Scholar is exceptionally helpful, but I wanted to be sure I had some relevant headers before I started researching there.
Google Scholar is also exceptionally affordable - the price of your Internet connection.
Did you know that Westlaw and Lexis-Nexis require a one year subscription!
I will be cheering on the sidelines when Google puts both of them out of business.
I'm also waiting for Artificial Intelligence to put 90% of lawyers out of business, but, since you might be a lawyer, I'm not going to mention that.