I have them and they are fuckin awesome. If you get them get direct drive, not belt drive, theyre MUCH better for scratching. Djin is very expensive but worth it, but you can get a "dj-in-a-box," which includes everythin for relatively cheap. If you stay with it, eventually you'll want to get serato which lets you play mp3's on a digital vinyl record, its 500 bucks but you automatically own every mp3 you have on vinyl, and its much cheaper than buying a lot of records although thats good to have too.You can learn everythin aboout mixing on youtube on how to videos. anything more you want to know?
^ tech 12's are just mad easy to find.
but anyway dude, if you have any questions, just message me i'd be happy to help ya