1. step: Download the opsi 'Getting Started'
Here you find the opsi-installation manual.
2. step: Download the current version of the opsi-depotserver as a VMWare machine.
Here you get opsi-depotserver Version 4.0.2 for VMWare. The installaion is according to the 'Getting Started'- manual.
3. step: For questions during the evaluation of opsi you will find help in the community forum.