There are several settings you can adjust. Basically, there are two main files in the ZEPPELIN_DIR\conf :
In the first one you can configure some interpreter settings. In the second more aspects related to the Website, like for instance, the Zeppelin server port (I am using the 8080 but most probably yours is already used by another application)
This is a very clear walkthrough. Jupyter is still easier to install, but Paul’s blog post lowers that Zeppelin installation learning curve.