Create a fan page related to the product niche you want to promote, and then collect and publish niche-related pictures. The key point is that your pictures must attract the attention of other users. With a certain number of fans, you can promote clickbank Products too.
A more labor-saving way is to use Instagram bots, which are used by many people. The bot will automatically follow other people who are interested in your niche, and they may follow you. Similarly, if you like other people's pictures, other users may visit you back and follow you.
On the IG account, you can set a link to the landing page (login page), you can use this page to collect emails, and then direct fans to clickbank related product pages, if they did not convert initially, you can continue to electronic listing Email marketing.
Using WordPress to build a login page, my blog provides tools: InstaBuilder, and also provides email marketing tools: Mailster, which can greatly save your cost.
On Facebook, you can find the IG group, other users linke your posts, in exchange, you do the same for them. This is also a good way to push your images to the explorer page.