We recommend the program PuTTY for SSH.
You can download it here: http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
To access your VPS/Dedicated server:
1. Run Putty, Under Hostname/ IP Address enter your VPS IP, use port 22 or the port you configured.
2. Login as: root
3. Use your root password for the password. Your password will be invisible as you type it.
You can watch the video tutorial for this by clicking here.