This is how I trained all of my pups...
You will need
1. collar or harness that has a front chest ring
2. leash
3. favorite toy & tiny treats.
4. a partner to help you.
Sit on the floor with your partner about 4 feet away from one another with your pup Lola on her leash.
One of you hold the pup while the other holds the toy & treat. While calling her name, pulling the leash toward you as she takes a step at a time.
When she finally makes her way to you (Reluctantly at first) show her her toy, give her a Big job well done (Good Girl) and the occasional treat. Try to make the toy the main reward.
Now switch, toss the leash to the opposite person and the toy to the other and do this over and over again and in time she will get it. Than you wont even have to tugg the leash to get her to come to you.
Simply say "Lola Come"
I have had so much success with this way of training, it works every time. So good luck !