1. You have to focus on getting huge traffic by sparing time daily and allocating budget.
2. Pre-plan and assign tracking number to each campaign and start with free and paid Traffic exchanges, Social medias (Facebook, Twitter etc.), your own Website, Mail Lists, XCards, BusinessCards and displaying Flyers to local busy points etc.
3. Regularly check from where you are getting more signups by using tracking numbers. Then put your full attention and budget on these points.