If you want to succeed on Steemit without buying a lot of Steempower from your own wallet, you really need to work hard on your blog. Creating interesting posts that engage users and make them want to read your next post. And stick to it. You may create some of the best work Steemit has ever seen and make very little post rewards when you are just starting out. It takes some time before you get noticed. For just starting out on the platform, I have two posts that I suggest you read. One is by @ethandsmith and it is tips and advice on how to polish your posts. It is linked HERE! And the other post that I suggest reading is by @ogochukwu, and it is about leaving meaningful comments on other peoples posts as a way of getting to know people and get your name out there. Not just go to other peoples posts and say "hey, go upvote me", but actually engaging with other users. His post is linked HERE!