Presentation is as important as good content. Have attractive pictures, fonts, etc. on your blog to hook the reader.
Acknowledge and appreciate your readers, especially regular readers by replying to comments and visiting their blogs.
Use technology - Social plugins and SEO tools are a great thing to market your blog or a blog post. If you do not know about it, then learn it. It helps you reach out your audience in a better way and also improves the ranking of your blog.