In the off-page optimization, the backlink is the most powerful weapon for a website to rank well in the SERPs. Article writing is the most effective way to do this. Write a lot of articles then submit them to different article submission websites or ask some friends to make a review of your site. This is what I am doing now. I am writing an article about my friend's entry and crated a link to his site from this post.
Through this way, a "vote" has been added to my friend's website when Google crawls and collects link information for this post.