Step 1: Open Filezilla
Step 2: Click on file Menu at top left then click on Site Manager
Step 3: Click "New Site" and give the site a name.

Step 4: Fill in the FTP connection details.
Host: your domain name
Protocal: FTP - File Transfer Protocol
Encryption: Use Plain FTP
Login type: Normal
User: your cpanel username
Password: Your cpanel password
Comments blank
Click OK.
Step 5: To connect to your server click the down arrow next to the site manager button.

You should be able to see your files on the connect server