Just keep practicing with whatever you want to practice with. Remember to pay attention to the loops that are playing and have fun. You will notice one day that it is beginning to make sense and thats where the real fun begins! :)

If you want to get a feel for what to listen to, record yourself playing and listen in a pair of headphones. Also, listen to mixes by DJs who you KNOW have serious skills and pay attention to them to hear what is good and what is not.

"All you have to do is learn how to listen."

--Piece of advice from a certain DJ that is near and dear to all of our hearts.