This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
The Connector kind of integrates Tomcat into Apache, so that you can use Apache as the web front end, which would then forward all requests for Java web apps to Tomcat. Much information can be found linked from this page.