You can sell your ebooks through Amazon's Kindle program or Apple's iTunes Connect, which gives you access to a large majority of the digital-book reading market and the barriers for entry are incredibly low. You don't need to invest lots of money to make this happen, but you do need to invest lots of time, not only in writing the ebooks, but in marketing them as well.
Double check yourself, before you double wreck yourself. Make sure everything you send to a company, whether a résumé, an email or a portfolio, is good to go. Double check your grammar and wording, and for God’s sake use spell check! This is especially important when it comes to the company’s name. Don’t spell their name wrong and be sure to type it how they type it (e.g. Problogger, not Pro Blogger).
Create a writer website or blog. A website not only demonstrates your technical ability, but it also creates an online hub that allows clients to connect to you. Keep the design of your website clean and uncluttered. Include examples of your work that demonstrate the kind of writing you do. Make the samples easy to find and to read, and make it easy for visitors to figure out how to contact you. .
Free Training Across The Web – Believe it or not, most of the training I’ve received over the years are sources I’ve found for free all over the web. I’ve shared a LOT of that info with you on this very website through my nearly 500 blog posts (to date). However, you should also check out sources such as YouTube. It’s true, places such as YouTube are filled with scammers and spammers, but mixed within those are some gems. For example, you can look up keynote speeches on affiliate marketing from various conferences, such as Affiliate Summit speakers. Using free content from around the web is hard to sort out and make sense of, so it’s best to use a service like Wealthy Affiliate because you are able to learn the things you need to learn, in the order you need to learn them, without all the distractions. However, as you progress, you may need to learn something specific, at which point you can go to free sources across the web to learn as you need it.
You'll also need ecommerce software, fulfillment software, worry about warehousing, customer service and refunds. But that's not all. You'll also need traffic. Think search engine optimization, Facebook ads, and other social media campaigns. It is hard work, especially on your own. You could opt for Amazon's platform, which might be the easier route. But, then again, at the end of the day, this is a serious business, which could produce significant profits. So you're either all in or you're not.