wait until you have some content (at least 10 posts) before start to promote your blog, then:
- put links to other blogs (and click on them), every blogger control his statistics, when someone see traffic coming from new blog, if he like it probably he will exchange the link
- comment on other blog
- write a pillar an submit it to digg end reddit, perhaps you'll not gain the first place on them, but you'll receive a lot of traffic
- subscribe to dmoz
- you are using a free hosting, so, invest the money you save for hosting in adwords