What's the point of Canon Lawyers?

[Cojuanco]

I don’t understand what Canon lawyers do and why we have them?
Whats the point of having trials? I mean aren’t inquisition days over?
Maybe someone could make my ignorant brain enlightened on this topic.

Also how does one become a canon lawyer?

This topic is both cool and strange to me.

1. The Church, as a society, as we know, has a body of laws known as Canon Law. Much is codified into the Code of Canon Law, but there are of course ancillary materials also having the force of law. Any legal system requires lawyers to interpret them, and judges to choose the correct interpretation of the law.
2. A trial is usually in writing these days. This is even true for large parts of the civil law (jury trials in non-criminal cases in America are rare; more common is a judgment as a matter of law). The most common trials are where a person makes a claim that their marriage was invalid. And the Roman Inquisition has a successor - it’s the Congregation for the Doctrine of the Faith. And they still excommunicate people, as Fr. Reynolds or the (late) Archbishop Lefebvre can tell you.