Belt Drive have a belt running between the motor and the turntable. If you try and skratch on them the needle will bounce like a motherfucker and the record will skip. you "can" skratch on belts but you gotta be super duper soft on your hands while touching the record. I remember getting use to skratching flawlessly on belt drives then when I swithed to direct drives, it felt like everything else just got easier.
Direct drives have the turntable mounted directing onto the motor. If your at guitar center try pretend skratching on belts and directs and you will notice a difference in just feel.
Dude i since your starting out id recommend this equipment.
get a Numark TT200. They are compared to the Technics 1200. They actually have a stronger torque than the 1200. The pitch control isnt as responsive as the 1200 but thats minor. Ive skratched on one of these and doubted them just because they were "Numark" but when I did I was surprised. They feel like 1200s. Best part, brand new they cost $200. You can even bargain with them at Guitar Center or they might have some Holiday sales going on right now.
Also take a look at the Numark M2 mixer. Its a simple 2 channel mixer for skratch djs. has slope adjustment for the crossfader for cut off time. It can cut in and out right away or you can adjust it for fading but u dont gotta worry about that since your cutting not mixing right? it has a 3 band eq, phone/line switchable RCA, two Lines RCA, mic, headphone inputs etc etc.
just do your research on it. dont ask the guitar center dudes. they dont know shit and will just try and sell you anything.
BTW, that meth song is called "Is It Me!" from his 421...the day after album. shit slap hard.