Local Multiplayer?

I want to add local multiplayer to my game, The Lazer Wars. I already have a multiplayer where you play on the same console, but i want to also make a multiplayer that uses 2 separate 3ds consoles.

Have you looked at the 'communication' section of http://smilebasic.com/en/reference/ ?

I just just did now, but there is so much info that it is like looking for a needle in a haystack. :/

And in this 8-item haystack, what needle do you need help finding?