You can completely skip this section if you don't want to use Maven to develop Vaadin applications. If you want to, and you are using NetBeans, please read the previous section if you haven't already.
You are still here. Chances are that you are not using Eclipse or NetBeans. Well, actually, the easier way to get Vaadin 7 is through Maven. We are not covering how to install Maven here. If you haven't already, install Maven following the instructions given in http://maven.apache.org.