I built a multiplayer third person shooter using tutorials at the link below but however it uses steam and since the platform for which I am developing for is Android, I have a problem. Please Help

The link is:https://docs.unrealengine.com/latest/INT/Videos/PLZlv_N0_O1gYqSlbGQVKsRg6fpxWndZqZ/abmzWUWxy1U/index.html

Also the game is pretty bare-bone, link to more tutorials which can help me add more functionalities to the game like team creation or reputation system or something like that would be appreciated.