Dear students - please don't ask us on how to get started with ownCloud - there is plenty of information - please read!!!
Setting up the server
Please follow this documentation: https://doc.owncloud.org/server/latest/admin_manual/installation/source_installation.html
In case you want to develop on core itself - please clone the core repository and run make to set it up properly
Further resources about development of the core component or apps development can be found here: https://doc.owncloud.org/server/latest/developer_manual/