extract all the archives to a directory and set up .bashrc so that java binaries, ant etc are in you path
JAVA_HOME=/opt/java/jdk ANT_HOME=/opt/java/ant CATALINA_HOME=/opt/java/tomcat
PATH=$PATH:$JAVA_HOME/bin:$ANT_HOME/bin
The conf/tomcat-users.xml will contain the credentials to let you use this webapp.
you will need to add manager role to the config file