You do have a good start with Gigarank, as Gigarank is a safe environment for the VPS. Depending on what you're going to use the VPS for, the more social and the more interactive, the greater the security you will have to get. VestaCP is a really good free panel to get as it comes with fail2ban free add on. It's already activated when you load the control panel. It has a very easy panel for fail2ban where one can block IPs as well or unblock them. VestaCP requires a little experience with working with VPS though. Which is easily sorted out as it has a community forum that answers most of the issues and how to solve them. Another free panel that comes with ddos protection is Webuzo from Softaculous. I've used it for almost two years up to April when I completely changed all my VPSs to VestaCP. Webuzo is easier to install for a beginner provided one follows the steps exactly. It also has a really good community forum that is regularly responded to by Webuzo's admin. The panel can be free - I went for the 25 US$ per year license though that provides access to all of the softaculous scripts. The free version has a limited number.
If I were a beginner I'd start with the free version of Webuzo and see how it goes. Note however my VPSs have only been used for Websites and secure ones with comments turned off.