Brennan Dunn has an epic guide to how to create an email course to better market and help your customers. This is a fantastic way to counter the credibility issue you’re bound to run into when selling your product:

It’s very, very, very hard to sell anything to someone who doesn’t know and trust you. Let’s say you write an ebook and you buy some cheap PPC ads that drive traffic to your sales page. Unless you have some sort of unicorn product, your conversion rate will be low — and you’re probably going to lose money.