This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
In a short way, download the tar file and extract the files. Its no different from a Windows installation. Keep in mind that you need to define the TOMCAT_HOME and JAVA_HOME env variables (check out your .login or .profile file). Go to the TOMCAT_HOME\bin directory and start tomcat. Also, use ls -l for directory list not dir..... ....just kidding..... regds. - satya