promote your blog to search engines, related forums, blogs, have content that will make people visit and revisit
SEO or PPC. There are no other options for quality & targeted traffic. Well maybe link exchanges with related sites, but it's not a very good idea.
Focus on getting quality back links on a consistent basis. Also try to keep adding unique content consistently.
- SEO - Joint Ventures - Promoting on the sites where your target market hangs out - Article marketing
you can get it organically through search engines or you can use ppc such as adwords, those get quality traffic. Also if you are active on a relevant forum that could also get you some traffic