Welcome to the JavaRanch. As with most things Linux, your best bet is to consult your particular distribution's documentation. Apache is more than likely available through your distribution's package management system. Configuring Apache is dependent on which version of Apache you install and documentation is available from The Apache Software Foundation.
Actually, Sree wanted Apache Tomcat. Since it's a Java app, the instructions are virtually identical to how you'd do it for Windows.
Easiest way is to go to the binary downloads which can be located via http://jakarta.apache.org/tomcat, select an appropriate tomcat release as a zipfile (tarballs work the same, if they're providing them), download, and expand the archive. Then set the JAVA_HOME, CATALINA_HOME and CATALINA_BASE environment variables per the instructions.
Customer surveys are for companies who didn't pay proper attention to begin with.