Re-edits

[Absolute]

Hi everyone! I fairly new to the whole producing thing so please bear with me if I ask any stupid questions.

I'm wondering how I would go about doing a re edit of a track?
I constantly hear tracks that the DJ has re edited to give it that bit of their own touch. Some times it maybe be subtle changes, but sometimes it's almost a completley different track. I've had a good look on YouTube and not really come across anything helpful.

thanks Paul

[Patch]

I use Ableton Live.

Get ready for a LOT of reading, and a LOT of Youtube video watching.