When I think about tracking, the most important aspect I think about is:
In what way can I reach my goal, for example tracking in the village, one of the most difficult parts of tracking.
Forcing a dog to do this wil bring no succes. There a several possibility's; training with food is one of them and will bring a lot of motivation for a pup to work out difficult tracks.
So when you want to teach your dog to track, motivation is the first thing you have to think about.