To promote your Facebook page for free, you have to make your page interesting so that follower likes & engage (like share & comment) with your page.For this you have to consider below points: 1. Your Content should be original & interesting to the user.For example, you can post News, Blogs, Articles, Video etc. or some question so as to engage your followers with your Facebook Page. 2. Post Type you should check what type of post is bringing reach & engagement to our post. There are 4 different types of post: Text Post. Link Post. Photo Post. Video Post (Help in increasing post engagement) You can use Facebook Insights to check what type of Post is bringing more reach & engagement to our post.