Give promotional offers on your site.
November 29, 2016
Collect a list of useful resources and post it on your site.
November 29, 2016

Write a free e-book on a topic in your niche and offer it for download.

Be aware that, before writing a quality book, you have to offer a sufficient amount of knowledge or practical experience. You may use a two-step scheme to write down your information. State your principle within your first step. Step two has to illustrate it.
Post the e-book on your site and spread the news about its launch: use microblogging services, your blog, social networks, etc.