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.
You need to installer either the ZIP or the EXE, not both. If you are using Windows, I recommend you to get the Windows Service Installer. It will set environment variables for you, and you will be able to start/stop the server from the task tray. It won't come with a startup.bat, because you can start the server via Windows Start menu (Monitor Tomcat).