Welcome to the forum!
ADAM is right, the looping is not automatic (on the beat). You have to set the in and out points manually.
As far as beat matching, don't trust the machine.
It takes time, but use your built-in beat counter [your brain!]. The easiest way to start is to have two copies of the same song (something with a steady beat, like techno/house helps), one for each deck. Start up one, wait a little, then start the other and try to get them to line up.
Beat matching has beend discussed several times, try the Search to find out more.
Good luck!