If you have rooter, ie WiFi at home, the easiest and fastest way is to use a home server, for example, I personally use the Filezilla Server. Very simple, fast and does not require any additional tools or anything else.
The only thing, if you start using it, is that you have to add additional rules to the firewall on each computer to allow the other computers to connect.
These are FileZilla Server Interface.exe and FileZilla Server.exe. You must enable both of them with a firewall.
Of cource You can use any local server or local network, but I would recommend this one. Then You can download anything from any computer to any other computer and also upload to other computers what ever You want. And You don't need any kind of wires.
Everything You need, can find here