I guess you mean organically? -Use a newsletter subscription -Have you tried to create a lead-gen offer - like a short eBook for example? -Do you have Social Traffic they have CTA buttons that you can use (like Facebook-sign up) Promote on FB, Twitter Google+, insta etc -Use incentives to get your current database to share your content Try some paid advertising. If you already have a good database you can try to run our campaigns they convert very well.