There is no panel installed, you need to manage through SSH, if you are looking for a free panel like cpanel you can install kloxo or webmin.

to install kloxo here are commands, make sure its a fresh install
Code: 
wget http://download.lxlabs.com/download/kloxo/production/kloxo-install-master.sh
sh ./kloxo-install-master.sh
note* it will install apache not nginx.