Hello Friends, According to my experience to promote a blog , first is the best way to do blog directory submission and we should also submit RSS feed and we should give our blog link to our other blog and we should also do book marking because book marking helps to get index soon and we should submit our blog in digg and twitter the most important thing that we should update our blog with fresh content .
another thing is to concentrate on one blog post and that should have enough content then start promoting it everywhere for particular keyword..that's it
Link exchanges with others sites are going to give you the best results. Try and find similar sites and ask them for a link exchange. This is a tried and true method from the days of the first websites online.