For a beat match with sync, have 1 master light lit. Id suggest the left one. But which ever side u want to be able to move both pitches with. Then turn both sync's on. Now if u cue on the beat the tunes will play in sync. if u need to adjust a tiny bit then move the side of jogwheel, and the sync light will start flashing to show u have adjusted slightly out of sync. if u want to jump back into sync press sync once to stop it flashing then again to turn it back on. U can be IN SYNC but not on beat, So have quantize turned on for the 2 decks, and then when u cue on beat u can see if the beats and bars match by seeing the red lines match up on the waves - Once ur in quantize mode and bot sync lights are on, the loops are easy to trigger once u get used to pressing on the beats