The easiest way to log in is by clicking on the 'Log in' link at the upper-right side of the page at http://voog.com.
You will have to provide your e-mail and password that you have signed up with and after a successful log-in, you will be directed to your Voog website in the edit-mode.
Alternatively, you may also add '/admin' to your websites address and you'll be directed to the log-in window (eg. yourdoimain.com/admin or mysite.voog.com/admin).
In case you wanted to log into another website that you have also registered with the same e-mail address, simply open the menu from the bottom right corner and choosing 'Manage my websites' option from the top of the menu.
You should see all the sites tied to this email address and access your site of choice by clicking on one of them.