I watched the Networking Tutorial. I tried, but it didnt work 
I´ve set Numbers Players up to 2. In the Editor on the FirstPerson Template i wasnt able to see see the second Player. I was alone on the map on both Editor Windows.
On 3rdPersonTemplate everything was fine, i could see the 2nd Player running around.
BUT when i packaged both templates and started an Multiplayer game (Laptop vs PC), i wasnt able to join the game.
I tried it serveral times with several templates by editing the Shortcut targets, and by joining/hosting ingame via console commands.
It doesnt work for me, why ??