The best way to start out in niche blogging is to narrow your choices to a particular niche that you have some interest or knowledge in. This limits the problems that can arise when you try to cover too many bases and lose focus. Nothing is more self-defeating than a blog that has no appeal to anyone.
Choosing a topic that you have knowledge and interest in makes it easier for you to offer some new insight into the niche and establish yourself as an authority. Your interest and enthusiasm will make