Networking?

Tutorials would be helpfull dont know where to begin !

What kind of networking?

Mostly depends on how you are trying to set this up (blueprints or C++) but there are sever commands for both that can be used.

For Blueprints I recommend downloading the project and looking yourself and how it is setup or watching the video - [UE4 - BP Tutorial] Multiplayer Session - Introduction [1/7] - YouTube, This is mostly for a LAN game, however it should give you a good idea how to have multiple sessions which will need to be done for dedicated server/ large player base games.

For C++ there are a lot of examples on various websites including the answerhub itself. however you would need to be a lot more specific as to what you are actually trying to do as it is not all covered in one place really.

By kind i hope you mean c++ or BP if so then c++ while i do enjoy using BP i wish to learn these technical things like these in C++. Im just trying to create a basic third person shooter with health and ammo pick ups fo personal learning and such