There are two main types of platforms you can use to sell eBooks: big, online marketplaces like Amazon and iBooks, or ecommerce platforms that let you build your own online store (Shopify, BigCommerce etc.). There are pros and cons to both — services like Amazon and iBooks give you access to a huge audience of readers, but take a sizeable cut of your sales revenue; tools like Shopify and BigCommerce give you complete control over the selling process and profit margins, but require you to build your own readership entirely from scratch (through marketing, SEO, PR etc.). Learn more.