To begin you'll need to upload the Content Farmer Pro™ files to your server. You can use your control panel or a FTP program such as FileZilla to upload the files to your server. For instructions, see the SWSoft's Plesk site, the cPanel site, or the FileZilla site.
Once uploaded, change the file attributes/permissions to 777 for the includes and data_storage folders. In FileZilla, this can be done by right clicking on the folder, then choosing File Attributes.
You can then be guided through the rest of the installation process by visiting the location you've just uploaded Content Farmer Professional Edition in your browser. The steps are also documented here for your convenience.