So, you’ve written a novel. Congratulations! You’re in the small percentage of people who do what they say and stick with what they do. But to make a career as an author you have to go one more crucial step and sell your novel to your intended target audience. “But how?” you ask. “And how much will it cost?”

Let’s answer the easy question first. The cost is almost entirely up to you. Will you be able to sell more books with a bigger budget? Quite possibly. But if you’re working with your purse...