No money.... stay away from a competitive niche. Go for a less competitive niche and then take the money you make to go after a more competitive niche.
You will have success with any blog if you provide quality content that is more in depth than your competition. Then build quality backlinks. With no money you will be building your own web 2.0's, guest posts, user profile, comments, forum links. These should be able to get you ranking for low completion. For highly competitive niches you are gonna need to buy a ton of links or better yet own your PBN.
