1) Search Engine optimization(Off page SEO, single post optimization, keyword optimization) to drive traffic from various Search Engines like Google, Yahoo, Bing, Ask.
2) Publish your blog posts to your Social Networking websites.
3) Guest Blogging to get maximum exposure. (Though you should not try it only for SEO, try building some links with fellow bloggers similar to your niche) You will be able to drive traffic from their site to your site.
4) Commenting on other blogs similar to your topics and niche.
5) Creating a network of your posts into your post (i.e interlinking similar posts with another post) it will increase time spent on your site thus decreasing bounce rate.