My budget is currently about $1,000, so anything around that (or less

I've done some research, and reviews for the Akai MPCs are pretty good, as well a some other brands, but I have some outstanding questions about MPCs in general.
For example, what is the exact process for sampling a dope bit of a record? If I have my turntable, can I hook it up to the MPC, and chop it up straight? Or do I have to go through another process?
Many thanks in advance for your help guys. Much love.