I have absolutely no clue how to use external servers, I don't know they want my ip address or someone else's. No idea what the damn port number is or do I roll with the one already there? They've made this way more complicated that it was, all you had to do was turn multiplayer on in your new world and have a friend on and you were golden. P.s. Some friends don't even appear online when i know they are because they're right beside me.
Read more: How the hell do I play with a single friend on Minecraft PE?