If you have not already done so, review the system requirements and have the following information ready to provide during the installation:
Download the latest version of OpenX from the OpenX website to your local computer. Unpack the archive (the unpacked directory will be named something similar to 'OpenX vX.X.XX'). Remove the numbers from the filename to make it easier to navigate to OpenX, and also to simplify future upgrades.
Upload the OpenX directory in the standard way you load files to your server, for example FTP or SCP. Load the directory to a location on your server that is accessible from a browser. For example, if your web server structure is /var/www/html/ you can place your extracted folders and files in /var/www/html/openx, then access it with the www.example.com/openx URL.
When you have uploaded OpenX to the server, open a web browser and visit your OpenX website to launch the installation wizard.