1.8.9 : First, u have Singleplayer at the top of the mainmenu, then Multiplayer at the middle. If u click on Multiplayer, u will get an othermenu, kinda the same as the Singleplayermenu. U only need IP Adress from a server to add by clicking ''Add Server''. Then u type the IP Adress and change the servername on your list. Then, Done! Or did i wrong?