ean's prep management

so i bought the mapping and videos literally a year ago. when i first used it, the beat grid was not moving at all. trying to tackle my files again as i get back into doing after focusing on producing for the past year. anything i should do pre prep wise in order to get my tracks peeped correctly?

running the latest traktor program and was hoping to prep songs on my computer keyboard like it shows in the tutorial. i also usually throw all my songs into a playlist in iTunes and then drag them into traktor through the playlist