if you want to go the hardware route then get a mpc or some hardware type sampler.. Since your just starting you i think that the mpc1000 would be the best bet...
And you might need a new turntable too.. Well thats if it doesn't hook up to the sampler you get..
If you want to go the software route then you will need to find a program that you like and hook your computer up wit a soundcard and all that type stuff.. I never used software so i don't have anything to suggest.... But go look around in the software part of this site and you might get some ideas..
I hope that i helped alittle bit....