how to connect two LANs with OpenVPN???

[amunix66]

Good day, in the company where I work is to implement a VPN software to connect 2 branches that are in different states, in specific want to implement OpenVPN
but the truth and i was researching a lot and can not find how to make it and wanted to tell me how to do if any of you and implement, as this project will depend
if I do a rehire or not is desir if not I shall work performed, I hope helping me puyedan ​​is life or death.
Greetings!