I just found a few interesting resources around vertica:

• A blog named vertica tips. As the name says, it contains a collection of very useful vertica tips and information around vertica.
• By the author of this blog, the github repository vertica-kit contains a very nice and easy to use set of SQL queries to understand the current state of your server.
• Another set of nice tools is contained in this vertica toolbelt, to complement standard monitoring tools.