How To install Apache Tomcat and configure Oracle ORDS on it

How To Confirgure/ Install Apache Tomcat and Configure Oracle ORDS on it and

What would happen if we change or delete the configuration file of ORDS
How to Call a Rest full Web service in Oracle APEX via Apache Tomcat and ORDS.

Download APACHE TOMCAT
https://tomcat.apache.org/download-90.cgi