Leanpub is a self-publishing platform that pays authors an 80% royalty rate on every sale.
You can create a book here: https://leanpub.com/create/book.
When you create a book, we offer you a number of powerful ways to write your book using Leanpub. Our "writing mode" options include:
Browser: Writing in your web browser using our in-browser plain text editor
Word: Upload a Word document formatted in accordance with our style guidelines
Cloud: Writing in plain text (or Word) using Dropbox or GitHub
Upload: This writing mode lets you upload ebook files you have created with your own workflow
We have clear and comprehensive tutorials for all of our writing modes here:
http://help.leanpub.com/en/articles/3088382-quick-walkthroughs-for-getting-started-on-a-leanpub-book
After you create a book, you will see a "Getting Started" page with instructions for getting started. You can switch between different writing modes to try them out.
You can use Leanpub's writing modes to create your ebook files and sell them anywhere you like. There is no obligation to sell your ebook on Leanpub.
To get a sense of all the ways you can use Leanpub to reach an audience and sell your book on our bookstore, we recommend you read the following article, with some helpful advice about successfully writing and selling books on Leanpub: