Summarize the following:
A good place to start is by importing all the personal contacts from your phone. After that, you can start expanding your search to include business connections, friends of friends and casual acquaintances.  In order to multiply your money-making opportunities, you’ll want to make sure that you’re able to hook as many eyes and ears as possible. Encourage your close friends and associates to begin using the app so that you can expand your professional network. With your audience now in place, you can begin zeroing in on who has the most to gain from your services. Tailor the content of your story feed to captivate the attention of these people, or communicate with them personally to really wow them.  Athletes, for example, will be more likely to want nutritional supplements, while new mothers may be interested in a seminar on how to manage time more effectively.  Analyze prospective customers based on the activities and interests listed on their social media profiles. One of the most useful features of WhatsApp is the ability to create closed groups of users based on some common interest or classification. A well-structured group can serve as a pool of contacts who you can guarantee will be responsive to your branding and promotions.  Your groups should have a definite purpose—for instance, they might give customers a place to offer suggestions about things they’d like to see in the future or provide feedback about a new product line.  Become a part of as many different groups at one time as you want. This will give you the freedom to fine-tune your marketing strategies even further. WhatsApp still doesn’t have the visibility of apps like Facebook, Twitter and Instagram. Fortunately, clever users can work through these other programs to build a bigger following. Make regular posts to keep your contacts updated, then guide them toward your WhatsApp profile for more information.  Let your friends on social media know about exclusive offers and other content that they’ll only be able to get by connecting with you on WhatsApp. Use WhatsApp as an alternative to other person-to-person chat options like Facebook Messenger or Snapchat.

Summary:
Add as many contacts as you can. Target interested parties specifically. Build private groups. Cross-promote on other social media platforms.