here are 2 ways you can upload your Website Content:
If you do not wish to install any software on your computer you may use online File Managers. You can find "File Manager 1" and "File Manager 2" inside the Control Panel (please check the left pane, under the "Files" tab). Please make sure to upload all your website content to the "public_html" folder.
You can also manage Your files with an FTP client. We recommend using "SmartFTP" or "FileZilla", however any other FTP client should also be fully compatible. You can find your FTP details in "FTP Access" tab on your Control Panel. Please make sure to upload all your website content to the "public_html" folder.