1. Post comments on other blogs
2. Register with blog networks like: BlogCatalog, Technorati and My Bloglog
While registering with these services you should remember a couple of things:
Tag your blog properly. Tags are really important – They are usually one or two word descriptions of your blog. For example- my blog would fall under categories like: Money, Finance, and Business. Dig around the specific service and look for the popular tags and try to use those tags for your blog. It will allow people who are interested in that topics to easily find your site.