GMS 2 How to create a multiplayer game on studio 2?




I was browsing some yt videos but I only found people posting about some external plugins for gm1.4 or something... I was wondering... Does this platform has its own multiplayer feature now on studio version 2? Or does it have its own external plugin? If so where exactly do I need to dl it?
And most importantly: Where can I learn how to make a multiplayer game?

Another question is: is it easier to make a multiplayer game for lan support only instead of server? If so I guess I'd like to start with that instead, as I never did a multiplayer game before... Where can I learn to get started on that?