Kung gusto mong mag-install bosing ng openvpn for pc, read this thread: https://phcorner.net/threads/298579/
For sample guide sa http proxy injector sa pc ay ito naman: https://phcorner.net/threads/710898/
It needs a lot of reading and practice to understand how they work kaya kumuha ka muna ng live configs (ovpn for openvpn, hpi/svi for the http injectors) till you find out the process.